/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-b8ad66e [2020-10-24 02:27:34,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:27:34,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:27:34,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:27:34,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:27:34,305 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:27:34,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:27:34,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:27:34,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:27:34,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:27:34,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:27:34,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:27:34,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:27:34,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:27:34,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:27:34,314 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:27:34,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:27:34,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:27:34,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:27:34,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:27:34,316 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:27:34,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:27:34,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:27:34,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:27:34,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:27:34,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:27:34,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:27:34,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:27:34,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:27:34,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:27:34,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:27:34,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:27:34,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:27:34,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-10-24 02:27:34,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13cabe5c/9500f356506646d49a39f2f87b93af36/FLAG5ecb4afa9 [2020-10-24 02:27:35,627 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:27:35,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-10-24 02:27:35,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13cabe5c/9500f356506646d49a39f2f87b93af36/FLAG5ecb4afa9 [2020-10-24 02:27:35,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13cabe5c/9500f356506646d49a39f2f87b93af36 [2020-10-24 02:27:35,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:27:35,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:27:35,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:27:35,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:27:35,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:27:35,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:27:35" (1/1) ... [2020-10-24 02:27:35,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a840b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:35, skipping insertion in model container [2020-10-24 02:27:35,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:27:35" (1/1) ... [2020-10-24 02:27:35,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:27:36,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:27:36,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:27:36,197 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:27:36,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:27:36,234 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:27:36,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36 WrapperNode [2020-10-24 02:27:36,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:27:36,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:27:36,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:27:36,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:27:36,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (1/1) ... [2020-10-24 02:27:36,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (1/1) ... [2020-10-24 02:27:36,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (1/1) ... [2020-10-24 02:27:36,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (1/1) ... [2020-10-24 02:27:36,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (1/1) ... [2020-10-24 02:27:36,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (1/1) ... [2020-10-24 02:27:36,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (1/1) ... [2020-10-24 02:27:36,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:27:36,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:27:36,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:27:36,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:27:36,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (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 [2020-10-24 02:27:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:27:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:27:36,357 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:27:36,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:27:36,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:27:36,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:27:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:27:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:27:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:27:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:27:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:27:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:27:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:27:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:27:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:27:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:27:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:27:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:27:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:27:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:27:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:27:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:27:36,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:27:36,678 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-24 02:27:36,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:27:36 BoogieIcfgContainer [2020-10-24 02:27:36,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:27:36,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:27:36,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:27:36,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:27:36,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:27:35" (1/3) ... [2020-10-24 02:27:36,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463843d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:27:36, skipping insertion in model container [2020-10-24 02:27:36,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:36" (2/3) ... [2020-10-24 02:27:36,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463843d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:27:36, skipping insertion in model container [2020-10-24 02:27:36,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:27:36" (3/3) ... [2020-10-24 02:27:36,693 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-10-24 02:27:36,710 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:27:36,716 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:27:36,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:27:36,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:27:36,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:27:36,764 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:27:36,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:27:36,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:27:36,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:27:36,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:27:36,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:27:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-24 02:27:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-24 02:27:36,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:36,808 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] [2020-10-24 02:27:36,809 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash -77372705, now seen corresponding path program 1 times [2020-10-24 02:27:36,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:36,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944479849] [2020-10-24 02:27:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:37,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:27:37,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944479849] [2020-10-24 02:27:37,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:27:37,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:27:37,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861774565] [2020-10-24 02:27:37,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:27:37,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:37,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:27:37,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:27:37,279 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-10-24 02:27:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:37,384 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2020-10-24 02:27:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:27:37,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-24 02:27:37,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:37,395 INFO L225 Difference]: With dead ends: 91 [2020-10-24 02:27:37,396 INFO L226 Difference]: Without dead ends: 51 [2020-10-24 02:27:37,400 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 [2020-10-24 02:27:37,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-24 02:27:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-24 02:27:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-24 02:27:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-24 02:27:37,460 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 33 [2020-10-24 02:27:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:37,461 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-24 02:27:37,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:27:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-24 02:27:37,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 02:27:37,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:37,463 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] [2020-10-24 02:27:37,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:27:37,464 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:37,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1541004353, now seen corresponding path program 1 times [2020-10-24 02:27:37,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:37,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973985367] [2020-10-24 02:27:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:27:37,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973985367] [2020-10-24 02:27:37,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:27:37,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:27:37,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454042154] [2020-10-24 02:27:37,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:27:37,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:37,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:27:37,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:27:37,719 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 6 states. [2020-10-24 02:27:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:38,062 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-10-24 02:27:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:27:38,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-24 02:27:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:38,065 INFO L225 Difference]: With dead ends: 62 [2020-10-24 02:27:38,065 INFO L226 Difference]: Without dead ends: 58 [2020-10-24 02:27:38,066 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 [2020-10-24 02:27:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-24 02:27:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-24 02:27:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-24 02:27:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-24 02:27:38,091 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 37 [2020-10-24 02:27:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:38,091 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-24 02:27:38,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:27:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-24 02:27:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-24 02:27:38,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:38,094 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] [2020-10-24 02:27:38,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:27:38,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:38,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:38,096 INFO L82 PathProgramCache]: Analyzing trace with hash -551766036, now seen corresponding path program 1 times [2020-10-24 02:27:38,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:38,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791571098] [2020-10-24 02:27:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:38,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-24 02:27:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:27:38,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791571098] [2020-10-24 02:27:38,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:27:38,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 02:27:38,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928284851] [2020-10-24 02:27:38,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:27:38,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:38,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:27:38,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:27:38,312 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-10-24 02:27:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:38,720 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2020-10-24 02:27:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 02:27:38,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-24 02:27:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:38,725 INFO L225 Difference]: With dead ends: 93 [2020-10-24 02:27:38,726 INFO L226 Difference]: Without dead ends: 70 [2020-10-24 02:27:38,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:27:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-24 02:27:38,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2020-10-24 02:27:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-24 02:27:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-24 02:27:38,746 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 47 [2020-10-24 02:27:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:38,747 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-24 02:27:38,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:27:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-24 02:27:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-24 02:27:38,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:38,749 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] [2020-10-24 02:27:38,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:27:38,749 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:38,750 INFO L82 PathProgramCache]: Analyzing trace with hash -333827980, now seen corresponding path program 1 times [2020-10-24 02:27:38,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:38,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116734093] [2020-10-24 02:27:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:38,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:38,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-24 02:27:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:27:38,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116734093] [2020-10-24 02:27:38,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:38,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 02:27:38,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642302045] [2020-10-24 02:27:38,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:27:38,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:38,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:27:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:27:38,878 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 8 states. [2020-10-24 02:27:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:39,261 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2020-10-24 02:27:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 02:27:39,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-24 02:27:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:39,263 INFO L225 Difference]: With dead ends: 78 [2020-10-24 02:27:39,263 INFO L226 Difference]: Without dead ends: 74 [2020-10-24 02:27:39,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:27:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-24 02:27:39,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-24 02:27:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-24 02:27:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-24 02:27:39,280 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 53 [2020-10-24 02:27:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:39,281 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-24 02:27:39,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:27:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-24 02:27:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-24 02:27:39,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:39,283 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] [2020-10-24 02:27:39,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:27:39,283 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:39,284 INFO L82 PathProgramCache]: Analyzing trace with hash -745297825, now seen corresponding path program 2 times [2020-10-24 02:27:39,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:39,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595043706] [2020-10-24 02:27:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-24 02:27:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-24 02:27:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-24 02:27:39,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595043706] [2020-10-24 02:27:39,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:39,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 02:27:39,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145955069] [2020-10-24 02:27:39,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:27:39,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:39,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:27:39,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:27:39,453 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 9 states. [2020-10-24 02:27:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:39,896 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2020-10-24 02:27:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 02:27:39,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-24 02:27:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:39,898 INFO L225 Difference]: With dead ends: 123 [2020-10-24 02:27:39,898 INFO L226 Difference]: Without dead ends: 94 [2020-10-24 02:27:39,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:27:39,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-24 02:27:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 75. [2020-10-24 02:27:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-24 02:27:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-10-24 02:27:39,919 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 63 [2020-10-24 02:27:39,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:39,919 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-10-24 02:27:39,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:27:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-10-24 02:27:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-24 02:27:39,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:39,921 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] [2020-10-24 02:27:39,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:27:39,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:39,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:39,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1059122969, now seen corresponding path program 3 times [2020-10-24 02:27:39,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:39,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097418007] [2020-10-24 02:27:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-24 02:27:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-24 02:27:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-24 02:27:40,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097418007] [2020-10-24 02:27:40,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:40,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 02:27:40,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69837680] [2020-10-24 02:27:40,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:27:40,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:40,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:27:40,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:27:40,075 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 9 states. [2020-10-24 02:27:40,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:40,645 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2020-10-24 02:27:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:27:40,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-24 02:27:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:40,654 INFO L225 Difference]: With dead ends: 94 [2020-10-24 02:27:40,654 INFO L226 Difference]: Without dead ends: 90 [2020-10-24 02:27:40,655 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 [2020-10-24 02:27:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-24 02:27:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-10-24 02:27:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-24 02:27:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-24 02:27:40,676 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 69 [2020-10-24 02:27:40,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:40,677 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-24 02:27:40,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:27:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-24 02:27:40,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-24 02:27:40,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:40,679 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] [2020-10-24 02:27:40,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 02:27:40,679 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:40,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2105748206, now seen corresponding path program 4 times [2020-10-24 02:27:40,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:40,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552409744] [2020-10-24 02:27:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-24 02:27:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-24 02:27:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-24 02:27:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-24 02:27:40,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552409744] [2020-10-24 02:27:40,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:40,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 02:27:40,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101579988] [2020-10-24 02:27:40,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 02:27:40,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:40,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 02:27:40,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:27:40,908 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 11 states. [2020-10-24 02:27:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:41,721 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-24 02:27:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:27:41,721 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-24 02:27:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:41,724 INFO L225 Difference]: With dead ends: 153 [2020-10-24 02:27:41,724 INFO L226 Difference]: Without dead ends: 118 [2020-10-24 02:27:41,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-24 02:27:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-24 02:27:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2020-10-24 02:27:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-24 02:27:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2020-10-24 02:27:41,756 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 79 [2020-10-24 02:27:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:41,757 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2020-10-24 02:27:41,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 02:27:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2020-10-24 02:27:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-24 02:27:41,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:41,759 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] [2020-10-24 02:27:41,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 02:27:41,759 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:41,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1446391194, now seen corresponding path program 5 times [2020-10-24 02:27:41,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:41,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855335609] [2020-10-24 02:27:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:41,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-24 02:27:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:27:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-24 02:27:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-24 02:27:41,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855335609] [2020-10-24 02:27:41,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:41,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:27:41,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761088349] [2020-10-24 02:27:41,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:27:41,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:41,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:27:41,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:27:41,935 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand 12 states. [2020-10-24 02:27:42,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:42,774 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2020-10-24 02:27:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 02:27:42,776 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-24 02:27:42,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:42,778 INFO L225 Difference]: With dead ends: 167 [2020-10-24 02:27:42,778 INFO L226 Difference]: Without dead ends: 132 [2020-10-24 02:27:42,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-24 02:27:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-24 02:27:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 97. [2020-10-24 02:27:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-24 02:27:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2020-10-24 02:27:42,824 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 85 [2020-10-24 02:27:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:42,824 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2020-10-24 02:27:42,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:27:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2020-10-24 02:27:42,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-24 02:27:42,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:42,833 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] [2020-10-24 02:27:42,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 02:27:42,833 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:42,834 INFO L82 PathProgramCache]: Analyzing trace with hash -102957022, now seen corresponding path program 6 times [2020-10-24 02:27:42,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:42,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343393941] [2020-10-24 02:27:42,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:27:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-24 02:27:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-24 02:27:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 44 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-24 02:27:43,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343393941] [2020-10-24 02:27:43,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:43,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:27:43,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407168736] [2020-10-24 02:27:43,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:27:43,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:43,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:27:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:27:43,011 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand 10 states. [2020-10-24 02:27:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:43,539 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2020-10-24 02:27:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:27:43,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-24 02:27:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:43,542 INFO L225 Difference]: With dead ends: 116 [2020-10-24 02:27:43,542 INFO L226 Difference]: Without dead ends: 112 [2020-10-24 02:27:43,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-24 02:27:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-24 02:27:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-10-24 02:27:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-24 02:27:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2020-10-24 02:27:43,563 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 91 [2020-10-24 02:27:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:43,564 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2020-10-24 02:27:43,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:27:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2020-10-24 02:27:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-24 02:27:43,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:43,566 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] [2020-10-24 02:27:43,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 02:27:43,567 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:43,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:43,567 INFO L82 PathProgramCache]: Analyzing trace with hash 919680653, now seen corresponding path program 7 times [2020-10-24 02:27:43,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:43,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143586619] [2020-10-24 02:27:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:43,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:27:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:43,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-24 02:27:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:43,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-24 02:27:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:43,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-24 02:27:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-24 02:27:43,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143586619] [2020-10-24 02:27:43,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:43,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:27:43,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650070064] [2020-10-24 02:27:43,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:27:43,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:43,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:27:43,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:27:43,849 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand 14 states. [2020-10-24 02:27:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:44,942 INFO L93 Difference]: Finished difference Result 197 states and 215 transitions. [2020-10-24 02:27:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 02:27:44,943 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-10-24 02:27:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:44,945 INFO L225 Difference]: With dead ends: 197 [2020-10-24 02:27:44,945 INFO L226 Difference]: Without dead ends: 156 [2020-10-24 02:27:44,947 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 [2020-10-24 02:27:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-24 02:27:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 113. [2020-10-24 02:27:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-24 02:27:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-10-24 02:27:44,968 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 101 [2020-10-24 02:27:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:44,968 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-10-24 02:27:44,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:27:44,968 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-10-24 02:27:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-24 02:27:44,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:44,970 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] [2020-10-24 02:27:44,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 02:27:44,970 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:44,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:44,971 INFO L82 PathProgramCache]: Analyzing trace with hash 13760789, now seen corresponding path program 8 times [2020-10-24 02:27:44,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:44,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608468047] [2020-10-24 02:27:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:45,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:45,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-24 02:27:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-24 02:27:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 02:27:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:45,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-24 02:27:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 52 proven. 70 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-24 02:27:45,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608468047] [2020-10-24 02:27:45,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:45,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 02:27:45,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110657566] [2020-10-24 02:27:45,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 02:27:45,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 02:27:45,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:27:45,125 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 11 states. [2020-10-24 02:27:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:45,832 INFO L93 Difference]: Finished difference Result 132 states and 135 transitions. [2020-10-24 02:27:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:27:45,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-10-24 02:27:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:45,835 INFO L225 Difference]: With dead ends: 132 [2020-10-24 02:27:45,835 INFO L226 Difference]: Without dead ends: 128 [2020-10-24 02:27:45,836 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 [2020-10-24 02:27:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-24 02:27:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2020-10-24 02:27:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-24 02:27:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2020-10-24 02:27:45,863 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 107 [2020-10-24 02:27:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:45,863 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2020-10-24 02:27:45,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 02:27:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2020-10-24 02:27:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-24 02:27:45,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:45,866 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] [2020-10-24 02:27:45,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 02:27:45,866 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:45,867 INFO L82 PathProgramCache]: Analyzing trace with hash -16393280, now seen corresponding path program 9 times [2020-10-24 02:27:45,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:45,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60085531] [2020-10-24 02:27:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:46,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:46,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-24 02:27:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:46,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-24 02:27:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 02:27:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-24 02:27:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-24 02:27:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 90 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-24 02:27:46,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60085531] [2020-10-24 02:27:46,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:46,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:27:46,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238371174] [2020-10-24 02:27:46,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:27:46,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:46,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:27:46,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:27:46,116 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand 16 states. [2020-10-24 02:27:47,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:47,390 INFO L93 Difference]: Finished difference Result 227 states and 248 transitions. [2020-10-24 02:27:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-24 02:27:47,391 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 117 [2020-10-24 02:27:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:47,393 INFO L225 Difference]: With dead ends: 227 [2020-10-24 02:27:47,393 INFO L226 Difference]: Without dead ends: 180 [2020-10-24 02:27:47,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2020-10-24 02:27:47,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-24 02:27:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 129. [2020-10-24 02:27:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-24 02:27:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-10-24 02:27:47,417 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 117 [2020-10-24 02:27:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:47,417 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-10-24 02:27:47,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:27:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-10-24 02:27:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-24 02:27:47,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:47,419 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] [2020-10-24 02:27:47,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 02:27:47,419 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:47,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1568706120, now seen corresponding path program 10 times [2020-10-24 02:27:47,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:47,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523820636] [2020-10-24 02:27:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:47,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:27:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:47,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:27:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:47,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:27:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:47,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:27:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:47,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-24 02:27:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 80 proven. 102 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-24 02:27:47,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523820636] [2020-10-24 02:27:47,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:47,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:27:47,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87479032] [2020-10-24 02:27:47,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:27:47,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:47,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:27:47,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:27:47,612 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 12 states. [2020-10-24 02:27:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:48,382 INFO L93 Difference]: Finished difference Result 148 states and 151 transitions. [2020-10-24 02:27:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:27:48,382 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-10-24 02:27:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:48,384 INFO L225 Difference]: With dead ends: 148 [2020-10-24 02:27:48,384 INFO L226 Difference]: Without dead ends: 144 [2020-10-24 02:27:48,385 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 [2020-10-24 02:27:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-24 02:27:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2020-10-24 02:27:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-24 02:27:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2020-10-24 02:27:48,406 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 123 [2020-10-24 02:27:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:48,407 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2020-10-24 02:27:48,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:27:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2020-10-24 02:27:48,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-24 02:27:48,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:48,409 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] [2020-10-24 02:27:48,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 02:27:48,409 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:48,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:48,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1613902541, now seen corresponding path program 11 times [2020-10-24 02:27:48,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:48,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972370251] [2020-10-24 02:27:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 02:27:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:48,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:27:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 02:27:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:48,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:27:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-24 02:27:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-24 02:27:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 89 proven. 127 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-24 02:27:48,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972370251] [2020-10-24 02:27:48,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:48,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-24 02:27:48,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405969752] [2020-10-24 02:27:48,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-24 02:27:48,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:48,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-24 02:27:48,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-24 02:27:48,700 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand 18 states. [2020-10-24 02:27:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:50,200 INFO L93 Difference]: Finished difference Result 257 states and 281 transitions. [2020-10-24 02:27:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-24 02:27:50,201 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-10-24 02:27:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:50,203 INFO L225 Difference]: With dead ends: 257 [2020-10-24 02:27:50,203 INFO L226 Difference]: Without dead ends: 204 [2020-10-24 02:27:50,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=359, Invalid=1047, Unknown=0, NotChecked=0, Total=1406 [2020-10-24 02:27:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-24 02:27:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 145. [2020-10-24 02:27:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-24 02:27:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2020-10-24 02:27:50,233 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 133 [2020-10-24 02:27:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:50,233 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2020-10-24 02:27:50,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-24 02:27:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2020-10-24 02:27:50,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-24 02:27:50,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:50,236 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] [2020-10-24 02:27:50,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 02:27:50,236 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:50,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1058902085, now seen corresponding path program 12 times [2020-10-24 02:27:50,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:50,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068964604] [2020-10-24 02:27:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:50,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-24 02:27:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-24 02:27:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:27:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-24 02:27:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:50,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:27:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:50,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:27:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 114 proven. 140 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-24 02:27:50,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068964604] [2020-10-24 02:27:50,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:50,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 02:27:50,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808239874] [2020-10-24 02:27:50,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 02:27:50,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:50,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 02:27:50,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-24 02:27:50,445 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand 13 states. [2020-10-24 02:27:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:51,345 INFO L93 Difference]: Finished difference Result 164 states and 167 transitions. [2020-10-24 02:27:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 02:27:51,346 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-10-24 02:27:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:51,348 INFO L225 Difference]: With dead ends: 164 [2020-10-24 02:27:51,348 INFO L226 Difference]: Without dead ends: 160 [2020-10-24 02:27:51,349 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 [2020-10-24 02:27:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-24 02:27:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 155. [2020-10-24 02:27:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-24 02:27:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2020-10-24 02:27:51,375 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 139 [2020-10-24 02:27:51,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:51,376 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2020-10-24 02:27:51,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 02:27:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2020-10-24 02:27:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-24 02:27:51,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:51,378 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] [2020-10-24 02:27:51,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 02:27:51,379 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:51,379 INFO L82 PathProgramCache]: Analyzing trace with hash -507069722, now seen corresponding path program 13 times [2020-10-24 02:27:51,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:51,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143258481] [2020-10-24 02:27:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-24 02:27:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-24 02:27:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 02:27:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-24 02:27:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:27:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:27:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:27:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 124 proven. 170 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-24 02:27:51,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143258481] [2020-10-24 02:27:51,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:51,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-24 02:27:51,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253526967] [2020-10-24 02:27:51,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-24 02:27:51,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:51,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-24 02:27:51,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:27:51,721 INFO L87 Difference]: Start difference. First operand 155 states and 158 transitions. Second operand 20 states. [2020-10-24 02:27:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:53,478 INFO L93 Difference]: Finished difference Result 287 states and 314 transitions. [2020-10-24 02:27:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-24 02:27:53,479 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2020-10-24 02:27:53,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:53,482 INFO L225 Difference]: With dead ends: 287 [2020-10-24 02:27:53,482 INFO L226 Difference]: Without dead ends: 228 [2020-10-24 02:27:53,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-24 02:27:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-24 02:27:53,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 161. [2020-10-24 02:27:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-24 02:27:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2020-10-24 02:27:53,511 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 149 [2020-10-24 02:27:53,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:53,511 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2020-10-24 02:27:53,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-24 02:27:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2020-10-24 02:27:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-24 02:27:53,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:53,514 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] [2020-10-24 02:27:53,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 02:27:53,514 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:53,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1282060946, now seen corresponding path program 14 times [2020-10-24 02:27:53,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:53,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008240809] [2020-10-24 02:27:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-24 02:27:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-24 02:27:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-24 02:27:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-24 02:27:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-24 02:27:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-24 02:27:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:27:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 154 proven. 184 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-24 02:27:53,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008240809] [2020-10-24 02:27:53,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:53,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:27:53,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307003668] [2020-10-24 02:27:53,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:27:53,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:53,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:27:53,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:27:53,747 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand 14 states. [2020-10-24 02:27:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:54,662 INFO L93 Difference]: Finished difference Result 180 states and 183 transitions. [2020-10-24 02:27:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 02:27:54,663 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-10-24 02:27:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:54,665 INFO L225 Difference]: With dead ends: 180 [2020-10-24 02:27:54,666 INFO L226 Difference]: Without dead ends: 176 [2020-10-24 02:27:54,666 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 [2020-10-24 02:27:54,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-24 02:27:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2020-10-24 02:27:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-24 02:27:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2020-10-24 02:27:54,701 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 155 [2020-10-24 02:27:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:54,701 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2020-10-24 02:27:54,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:27:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2020-10-24 02:27:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-24 02:27:54,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:54,703 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] [2020-10-24 02:27:54,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-24 02:27:54,704 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash 674387161, now seen corresponding path program 15 times [2020-10-24 02:27:54,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:54,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652192664] [2020-10-24 02:27:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-24 02:27:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-24 02:27:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-24 02:27:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-24 02:27:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-24 02:27:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-24 02:27:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:27:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:27:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 165 proven. 219 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-24 02:27:55,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652192664] [2020-10-24 02:27:55,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:55,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-24 02:27:55,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109744708] [2020-10-24 02:27:55,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-24 02:27:55,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:55,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-24 02:27:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-10-24 02:27:55,073 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand 22 states. [2020-10-24 02:27:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:57,083 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2020-10-24 02:27:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-24 02:27:57,084 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 165 [2020-10-24 02:27:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:57,087 INFO L225 Difference]: With dead ends: 317 [2020-10-24 02:27:57,087 INFO L226 Difference]: Without dead ends: 252 [2020-10-24 02:27:57,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=581, Invalid=1675, Unknown=0, NotChecked=0, Total=2256 [2020-10-24 02:27:57,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-24 02:27:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 177. [2020-10-24 02:27:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-24 02:27:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 180 transitions. [2020-10-24 02:27:57,126 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 180 transitions. Word has length 165 [2020-10-24 02:27:57,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:57,126 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 180 transitions. [2020-10-24 02:27:57,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-24 02:27:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 180 transitions. [2020-10-24 02:27:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-24 02:27:57,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:57,129 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] [2020-10-24 02:27:57,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-24 02:27:57,129 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:57,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:57,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1490736993, now seen corresponding path program 16 times [2020-10-24 02:27:57,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:57,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535315624] [2020-10-24 02:27:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-24 02:27:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:27:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-24 02:27:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:27:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-24 02:27:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-24 02:27:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:27:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-24 02:27:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 200 proven. 234 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-24 02:27:57,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535315624] [2020-10-24 02:27:57,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:57,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 02:27:57,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523024499] [2020-10-24 02:27:57,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 02:27:57,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:57,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 02:27:57,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:27:57,381 INFO L87 Difference]: Start difference. First operand 177 states and 180 transitions. Second operand 15 states. [2020-10-24 02:27:58,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:27:58,415 INFO L93 Difference]: Finished difference Result 196 states and 199 transitions. [2020-10-24 02:27:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:27:58,416 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 171 [2020-10-24 02:27:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:27:58,418 INFO L225 Difference]: With dead ends: 196 [2020-10-24 02:27:58,418 INFO L226 Difference]: Without dead ends: 192 [2020-10-24 02:27:58,419 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 [2020-10-24 02:27:58,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-24 02:27:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2020-10-24 02:27:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-24 02:27:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 190 transitions. [2020-10-24 02:27:58,452 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 190 transitions. Word has length 171 [2020-10-24 02:27:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:27:58,453 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 190 transitions. [2020-10-24 02:27:58,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 02:27:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 190 transitions. [2020-10-24 02:27:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-24 02:27:58,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:27:58,455 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] [2020-10-24 02:27:58,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-24 02:27:58,456 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:27:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:27:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1945520908, now seen corresponding path program 17 times [2020-10-24 02:27:58,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:27:58,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712717156] [2020-10-24 02:27:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:27:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:27:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-24 02:27:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:27:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-24 02:27:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:27:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-24 02:27:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-24 02:27:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:27:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-24 02:27:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-24 02:27:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:27:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 212 proven. 274 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-24 02:27:58,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712717156] [2020-10-24 02:27:58,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:27:58,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-24 02:27:58,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067803018] [2020-10-24 02:27:58,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-24 02:27:58,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:27:58,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-24 02:27:58,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-10-24 02:27:58,883 INFO L87 Difference]: Start difference. First operand 187 states and 190 transitions. Second operand 24 states. [2020-10-24 02:28:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:01,111 INFO L93 Difference]: Finished difference Result 347 states and 380 transitions. [2020-10-24 02:28:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-24 02:28:01,112 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 181 [2020-10-24 02:28:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:01,115 INFO L225 Difference]: With dead ends: 347 [2020-10-24 02:28:01,115 INFO L226 Difference]: Without dead ends: 276 [2020-10-24 02:28:01,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=713, Invalid=2043, Unknown=0, NotChecked=0, Total=2756 [2020-10-24 02:28:01,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-24 02:28:01,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 193. [2020-10-24 02:28:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-24 02:28:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2020-10-24 02:28:01,159 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 181 [2020-10-24 02:28:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:01,159 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2020-10-24 02:28:01,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-24 02:28:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2020-10-24 02:28:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-24 02:28:01,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:01,161 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] [2020-10-24 02:28:01,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-24 02:28:01,161 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:01,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:01,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1905835412, now seen corresponding path program 18 times [2020-10-24 02:28:01,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:01,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437341417] [2020-10-24 02:28:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-24 02:28:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-24 02:28:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-24 02:28:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:28:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:28:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-24 02:28:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-24 02:28:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-24 02:28:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:28:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 252 proven. 290 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-24 02:28:01,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437341417] [2020-10-24 02:28:01,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:01,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:28:01,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371930749] [2020-10-24 02:28:01,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:28:01,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:01,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:28:01,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:28:01,482 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand 16 states. [2020-10-24 02:28:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:02,543 INFO L93 Difference]: Finished difference Result 212 states and 215 transitions. [2020-10-24 02:28:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 02:28:02,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 187 [2020-10-24 02:28:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:02,546 INFO L225 Difference]: With dead ends: 212 [2020-10-24 02:28:02,546 INFO L226 Difference]: Without dead ends: 208 [2020-10-24 02:28:02,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:28:02,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-24 02:28:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2020-10-24 02:28:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-24 02:28:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 206 transitions. [2020-10-24 02:28:02,580 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 206 transitions. Word has length 187 [2020-10-24 02:28:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:02,580 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 206 transitions. [2020-10-24 02:28:02,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:28:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 206 transitions. [2020-10-24 02:28:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-24 02:28:02,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:02,582 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] [2020-10-24 02:28:02,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-24 02:28:02,582 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:02,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1499705985, now seen corresponding path program 19 times [2020-10-24 02:28:02,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:02,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778995402] [2020-10-24 02:28:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-24 02:28:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-24 02:28:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-24 02:28:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:28:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:28:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-24 02:28:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-24 02:28:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-24 02:28:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:28:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 02:28:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 265 proven. 335 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-24 02:28:03,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778995402] [2020-10-24 02:28:03,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:03,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-24 02:28:03,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222638805] [2020-10-24 02:28:03,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-24 02:28:03,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:03,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-24 02:28:03,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-24 02:28:03,124 INFO L87 Difference]: Start difference. First operand 203 states and 206 transitions. Second operand 26 states. [2020-10-24 02:28:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:05,617 INFO L93 Difference]: Finished difference Result 377 states and 413 transitions. [2020-10-24 02:28:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-24 02:28:05,621 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 197 [2020-10-24 02:28:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:05,624 INFO L225 Difference]: With dead ends: 377 [2020-10-24 02:28:05,624 INFO L226 Difference]: Without dead ends: 300 [2020-10-24 02:28:05,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=859, Invalid=2447, Unknown=0, NotChecked=0, Total=3306 [2020-10-24 02:28:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-24 02:28:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 209. [2020-10-24 02:28:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-24 02:28:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 212 transitions. [2020-10-24 02:28:05,667 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 212 transitions. Word has length 197 [2020-10-24 02:28:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:05,668 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 212 transitions. [2020-10-24 02:28:05,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-24 02:28:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 212 transitions. [2020-10-24 02:28:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-24 02:28:05,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:05,669 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] [2020-10-24 02:28:05,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-24 02:28:05,670 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:05,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1621577721, now seen corresponding path program 20 times [2020-10-24 02:28:05,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:05,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533452122] [2020-10-24 02:28:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:28:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-24 02:28:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-24 02:28:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-24 02:28:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-24 02:28:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 02:28:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:28:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:28:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:28:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:28:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 310 proven. 352 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-24 02:28:05,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533452122] [2020-10-24 02:28:05,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:05,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-24 02:28:05,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943387038] [2020-10-24 02:28:05,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-24 02:28:05,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:05,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-24 02:28:05,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-24 02:28:05,987 INFO L87 Difference]: Start difference. First operand 209 states and 212 transitions. Second operand 17 states. [2020-10-24 02:28:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:07,138 INFO L93 Difference]: Finished difference Result 228 states and 231 transitions. [2020-10-24 02:28:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 02:28:07,138 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 203 [2020-10-24 02:28:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:07,140 INFO L225 Difference]: With dead ends: 228 [2020-10-24 02:28:07,141 INFO L226 Difference]: Without dead ends: 224 [2020-10-24 02:28:07,141 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 [2020-10-24 02:28:07,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-24 02:28:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2020-10-24 02:28:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-24 02:28:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2020-10-24 02:28:07,184 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 203 [2020-10-24 02:28:07,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:07,185 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2020-10-24 02:28:07,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-24 02:28:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2020-10-24 02:28:07,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-24 02:28:07,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:07,187 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] [2020-10-24 02:28:07,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-24 02:28:07,187 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:07,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:07,188 INFO L82 PathProgramCache]: Analyzing trace with hash 89263154, now seen corresponding path program 21 times [2020-10-24 02:28:07,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:07,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637582341] [2020-10-24 02:28:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-24 02:28:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-24 02:28:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-24 02:28:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-24 02:28:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-24 02:28:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 02:28:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:28:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:28:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:28:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:28:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-24 02:28:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 324 proven. 402 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-24 02:28:07,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637582341] [2020-10-24 02:28:07,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:07,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-24 02:28:07,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039791578] [2020-10-24 02:28:07,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-24 02:28:07,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-24 02:28:07,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-24 02:28:07,802 INFO L87 Difference]: Start difference. First operand 219 states and 222 transitions. Second operand 28 states. [2020-10-24 02:28:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:10,646 INFO L93 Difference]: Finished difference Result 407 states and 446 transitions. [2020-10-24 02:28:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-24 02:28:10,647 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 213 [2020-10-24 02:28:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:10,650 INFO L225 Difference]: With dead ends: 407 [2020-10-24 02:28:10,650 INFO L226 Difference]: Without dead ends: 324 [2020-10-24 02:28:10,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1019, Invalid=2887, Unknown=0, NotChecked=0, Total=3906 [2020-10-24 02:28:10,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-24 02:28:10,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 225. [2020-10-24 02:28:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-24 02:28:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2020-10-24 02:28:10,696 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 213 [2020-10-24 02:28:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:10,696 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 228 transitions. [2020-10-24 02:28:10,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-24 02:28:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 228 transitions. [2020-10-24 02:28:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-24 02:28:10,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:10,698 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] [2020-10-24 02:28:10,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-24 02:28:10,698 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:10,699 INFO L82 PathProgramCache]: Analyzing trace with hash -414687558, now seen corresponding path program 22 times [2020-10-24 02:28:10,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:10,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273923502] [2020-10-24 02:28:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-24 02:28:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:10,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:28:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:10,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:28:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:28:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:10,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-24 02:28:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:11,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:28:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-24 02:28:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:28:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-24 02:28:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:28:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:11,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:28:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 374 proven. 420 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-24 02:28:11,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273923502] [2020-10-24 02:28:11,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:11,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-24 02:28:11,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358893453] [2020-10-24 02:28:11,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-24 02:28:11,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:11,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-24 02:28:11,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-24 02:28:11,118 INFO L87 Difference]: Start difference. First operand 225 states and 228 transitions. Second operand 18 states. [2020-10-24 02:28:12,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:12,354 INFO L93 Difference]: Finished difference Result 244 states and 247 transitions. [2020-10-24 02:28:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:28:12,354 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 219 [2020-10-24 02:28:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:12,357 INFO L225 Difference]: With dead ends: 244 [2020-10-24 02:28:12,357 INFO L226 Difference]: Without dead ends: 240 [2020-10-24 02:28:12,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=298, Invalid=824, Unknown=0, NotChecked=0, Total=1122 [2020-10-24 02:28:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-24 02:28:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2020-10-24 02:28:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-24 02:28:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 238 transitions. [2020-10-24 02:28:12,392 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 238 transitions. Word has length 219 [2020-10-24 02:28:12,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:12,392 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 238 transitions. [2020-10-24 02:28:12,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-24 02:28:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 238 transitions. [2020-10-24 02:28:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-24 02:28:12,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:12,394 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] [2020-10-24 02:28:12,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-24 02:28:12,395 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:12,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:12,395 INFO L82 PathProgramCache]: Analyzing trace with hash -68602075, now seen corresponding path program 23 times [2020-10-24 02:28:12,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:12,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536759762] [2020-10-24 02:28:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-24 02:28:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:28:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-24 02:28:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:28:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-24 02:28:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:28:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-24 02:28:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:28:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-24 02:28:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:28:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:28:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:12,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-24 02:28:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 389 proven. 475 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-24 02:28:13,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536759762] [2020-10-24 02:28:13,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:13,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-24 02:28:13,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678127758] [2020-10-24 02:28:13,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-24 02:28:13,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:13,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-24 02:28:13,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:28:13,016 INFO L87 Difference]: Start difference. First operand 235 states and 238 transitions. Second operand 30 states. [2020-10-24 02:28:16,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:16,283 INFO L93 Difference]: Finished difference Result 437 states and 479 transitions. [2020-10-24 02:28:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-24 02:28:16,284 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 229 [2020-10-24 02:28:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:16,287 INFO L225 Difference]: With dead ends: 437 [2020-10-24 02:28:16,288 INFO L226 Difference]: Without dead ends: 348 [2020-10-24 02:28:16,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1193, Invalid=3363, Unknown=0, NotChecked=0, Total=4556 [2020-10-24 02:28:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-24 02:28:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 241. [2020-10-24 02:28:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-24 02:28:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 244 transitions. [2020-10-24 02:28:16,330 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 244 transitions. Word has length 229 [2020-10-24 02:28:16,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:16,330 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 244 transitions. [2020-10-24 02:28:16,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-24 02:28:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 244 transitions. [2020-10-24 02:28:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-24 02:28:16,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:16,332 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] [2020-10-24 02:28:16,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-24 02:28:16,333 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:16,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:16,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1966700973, now seen corresponding path program 24 times [2020-10-24 02:28:16,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:16,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042191735] [2020-10-24 02:28:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-24 02:28:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-24 02:28:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-24 02:28:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:28:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:28:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:28:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-24 02:28:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-24 02:28:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-24 02:28:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 02:28:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-24 02:28:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:28:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 444 proven. 494 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-24 02:28:16,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042191735] [2020-10-24 02:28:16,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:16,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-24 02:28:16,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219860237] [2020-10-24 02:28:16,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-24 02:28:16,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:16,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-24 02:28:16,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-10-24 02:28:16,753 INFO L87 Difference]: Start difference. First operand 241 states and 244 transitions. Second operand 19 states. [2020-10-24 02:28:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:18,085 INFO L93 Difference]: Finished difference Result 260 states and 263 transitions. [2020-10-24 02:28:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-24 02:28:18,086 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 235 [2020-10-24 02:28:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:18,088 INFO L225 Difference]: With dead ends: 260 [2020-10-24 02:28:18,088 INFO L226 Difference]: Without dead ends: 256 [2020-10-24 02:28:18,089 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 [2020-10-24 02:28:18,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-24 02:28:18,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2020-10-24 02:28:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-24 02:28:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 254 transitions. [2020-10-24 02:28:18,140 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 254 transitions. Word has length 235 [2020-10-24 02:28:18,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:18,141 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 254 transitions. [2020-10-24 02:28:18,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-24 02:28:18,141 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 254 transitions. [2020-10-24 02:28:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-24 02:28:18,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:18,143 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] [2020-10-24 02:28:18,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-24 02:28:18,143 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:18,145 INFO L82 PathProgramCache]: Analyzing trace with hash 534216280, now seen corresponding path program 25 times [2020-10-24 02:28:18,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:18,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818192768] [2020-10-24 02:28:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-24 02:28:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-24 02:28:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-24 02:28:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:28:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:28:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:28:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-24 02:28:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-24 02:28:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-24 02:28:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 02:28:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-24 02:28:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:28:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:28:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 460 proven. 554 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-24 02:28:18,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818192768] [2020-10-24 02:28:18,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:18,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-24 02:28:18,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684951733] [2020-10-24 02:28:18,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-24 02:28:18,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:18,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-24 02:28:18,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-10-24 02:28:18,875 INFO L87 Difference]: Start difference. First operand 251 states and 254 transitions. Second operand 32 states. [2020-10-24 02:28:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:22,394 INFO L93 Difference]: Finished difference Result 467 states and 512 transitions. [2020-10-24 02:28:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-24 02:28:22,395 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 245 [2020-10-24 02:28:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:22,399 INFO L225 Difference]: With dead ends: 467 [2020-10-24 02:28:22,399 INFO L226 Difference]: Without dead ends: 372 [2020-10-24 02:28:22,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1381, Invalid=3875, Unknown=0, NotChecked=0, Total=5256 [2020-10-24 02:28:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-24 02:28:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 257. [2020-10-24 02:28:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-24 02:28:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 260 transitions. [2020-10-24 02:28:22,447 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 260 transitions. Word has length 245 [2020-10-24 02:28:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:22,448 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 260 transitions. [2020-10-24 02:28:22,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-24 02:28:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 260 transitions. [2020-10-24 02:28:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-24 02:28:22,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:22,450 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] [2020-10-24 02:28:22,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-24 02:28:22,450 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:22,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:22,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1633570592, now seen corresponding path program 26 times [2020-10-24 02:28:22,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:22,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198548156] [2020-10-24 02:28:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:28:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-24 02:28:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-24 02:28:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:28:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-24 02:28:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-24 02:28:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:28:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:28:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-24 02:28:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 02:28:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:28:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 02:28:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:28:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 520 proven. 574 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-24 02:28:22,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198548156] [2020-10-24 02:28:22,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:22,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-24 02:28:22,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535132953] [2020-10-24 02:28:22,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-24 02:28:22,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:22,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-24 02:28:22,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:28:22,861 INFO L87 Difference]: Start difference. First operand 257 states and 260 transitions. Second operand 20 states. [2020-10-24 02:28:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:24,302 INFO L93 Difference]: Finished difference Result 276 states and 279 transitions. [2020-10-24 02:28:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-24 02:28:24,303 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 251 [2020-10-24 02:28:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:24,306 INFO L225 Difference]: With dead ends: 276 [2020-10-24 02:28:24,306 INFO L226 Difference]: Without dead ends: 272 [2020-10-24 02:28:24,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=385, Invalid=1021, Unknown=0, NotChecked=0, Total=1406 [2020-10-24 02:28:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-24 02:28:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2020-10-24 02:28:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-24 02:28:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 270 transitions. [2020-10-24 02:28:24,366 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 270 transitions. Word has length 251 [2020-10-24 02:28:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:24,367 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 270 transitions. [2020-10-24 02:28:24,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-24 02:28:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 270 transitions. [2020-10-24 02:28:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-24 02:28:24,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:24,369 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] [2020-10-24 02:28:24,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-24 02:28:24,369 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:24,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1932956107, now seen corresponding path program 27 times [2020-10-24 02:28:24,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:24,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335328304] [2020-10-24 02:28:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:28:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-24 02:28:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-24 02:28:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:28:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-24 02:28:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-24 02:28:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:28:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:28:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-24 02:28:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 02:28:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:28:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 02:28:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:28:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:28:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 537 proven. 639 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-24 02:28:25,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335328304] [2020-10-24 02:28:25,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:25,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-24 02:28:25,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992276832] [2020-10-24 02:28:25,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-24 02:28:25,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:25,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-24 02:28:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2020-10-24 02:28:25,177 INFO L87 Difference]: Start difference. First operand 267 states and 270 transitions. Second operand 34 states. [2020-10-24 02:28:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:28,937 INFO L93 Difference]: Finished difference Result 497 states and 545 transitions. [2020-10-24 02:28:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-24 02:28:28,938 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 261 [2020-10-24 02:28:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:28,941 INFO L225 Difference]: With dead ends: 497 [2020-10-24 02:28:28,941 INFO L226 Difference]: Without dead ends: 396 [2020-10-24 02:28:28,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1583, Invalid=4423, Unknown=0, NotChecked=0, Total=6006 [2020-10-24 02:28:28,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-24 02:28:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 273. [2020-10-24 02:28:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-24 02:28:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 276 transitions. [2020-10-24 02:28:29,002 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 276 transitions. Word has length 261 [2020-10-24 02:28:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:29,002 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 276 transitions. [2020-10-24 02:28:29,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-24 02:28:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 276 transitions. [2020-10-24 02:28:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-24 02:28:29,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:29,004 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] [2020-10-24 02:28:29,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-24 02:28:29,004 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:29,005 INFO L82 PathProgramCache]: Analyzing trace with hash 630895699, now seen corresponding path program 28 times [2020-10-24 02:28:29,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:29,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994811591] [2020-10-24 02:28:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:28:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:28:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-24 02:28:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-24 02:28:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-24 02:28:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:28:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 02:28:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-24 02:28:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:28:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:28:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:28:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-24 02:28:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:28:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:28:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1626 backedges. 602 proven. 660 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-24 02:28:29,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994811591] [2020-10-24 02:28:29,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:29,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-24 02:28:29,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160950310] [2020-10-24 02:28:29,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-24 02:28:29,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:29,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-24 02:28:29,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2020-10-24 02:28:29,464 INFO L87 Difference]: Start difference. First operand 273 states and 276 transitions. Second operand 21 states. [2020-10-24 02:28:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:30,994 INFO L93 Difference]: Finished difference Result 292 states and 295 transitions. [2020-10-24 02:28:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 02:28:30,994 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 267 [2020-10-24 02:28:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:30,997 INFO L225 Difference]: With dead ends: 292 [2020-10-24 02:28:30,997 INFO L226 Difference]: Without dead ends: 288 [2020-10-24 02:28:30,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=433, Invalid=1127, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 02:28:30,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-24 02:28:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 283. [2020-10-24 02:28:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-24 02:28:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 286 transitions. [2020-10-24 02:28:31,059 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 286 transitions. Word has length 267 [2020-10-24 02:28:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:31,059 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 286 transitions. [2020-10-24 02:28:31,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-24 02:28:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 286 transitions. [2020-10-24 02:28:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-24 02:28:31,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:31,062 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] [2020-10-24 02:28:31,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-24 02:28:31,062 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:31,063 INFO L82 PathProgramCache]: Analyzing trace with hash -406576770, now seen corresponding path program 29 times [2020-10-24 02:28:31,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:31,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147546590] [2020-10-24 02:28:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-24 02:28:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:28:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-24 02:28:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-24 02:28:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-24 02:28:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:28:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 02:28:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-24 02:28:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:28:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:28:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:28:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-24 02:28:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:28:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:28:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:28:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 620 proven. 730 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-24 02:28:31,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147546590] [2020-10-24 02:28:31,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:31,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-24 02:28:31,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435095973] [2020-10-24 02:28:31,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-24 02:28:31,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:31,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-24 02:28:31,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2020-10-24 02:28:31,954 INFO L87 Difference]: Start difference. First operand 283 states and 286 transitions. Second operand 36 states. [2020-10-24 02:28:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:35,968 INFO L93 Difference]: Finished difference Result 527 states and 578 transitions. [2020-10-24 02:28:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-24 02:28:35,968 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 277 [2020-10-24 02:28:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:35,972 INFO L225 Difference]: With dead ends: 527 [2020-10-24 02:28:35,972 INFO L226 Difference]: Without dead ends: 420 [2020-10-24 02:28:35,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1799, Invalid=5007, Unknown=0, NotChecked=0, Total=6806 [2020-10-24 02:28:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-24 02:28:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 289. [2020-10-24 02:28:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-24 02:28:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 292 transitions. [2020-10-24 02:28:36,039 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 292 transitions. Word has length 277 [2020-10-24 02:28:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:36,040 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 292 transitions. [2020-10-24 02:28:36,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-24 02:28:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 292 transitions. [2020-10-24 02:28:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-24 02:28:36,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:36,042 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] [2020-10-24 02:28:36,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-24 02:28:36,042 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:36,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:36,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1142803450, now seen corresponding path program 30 times [2020-10-24 02:28:36,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:36,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817522134] [2020-10-24 02:28:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-24 02:28:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-24 02:28:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 02:28:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:28:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:28:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:28:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:28:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-24 02:28:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-24 02:28:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-24 02:28:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-24 02:28:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-24 02:28:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:28:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:28:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:28:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 690 proven. 752 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-24 02:28:36,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817522134] [2020-10-24 02:28:36,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:36,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-24 02:28:36,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146010535] [2020-10-24 02:28:36,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-24 02:28:36,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:36,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-24 02:28:36,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=301, Unknown=0, NotChecked=0, Total=462 [2020-10-24 02:28:36,514 INFO L87 Difference]: Start difference. First operand 289 states and 292 transitions. Second operand 22 states. [2020-10-24 02:28:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:38,133 INFO L93 Difference]: Finished difference Result 308 states and 311 transitions. [2020-10-24 02:28:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-24 02:28:38,133 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 283 [2020-10-24 02:28:38,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:38,136 INFO L225 Difference]: With dead ends: 308 [2020-10-24 02:28:38,136 INFO L226 Difference]: Without dead ends: 304 [2020-10-24 02:28:38,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=1238, Unknown=0, NotChecked=0, Total=1722 [2020-10-24 02:28:38,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-24 02:28:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 299. [2020-10-24 02:28:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-24 02:28:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 302 transitions. [2020-10-24 02:28:38,202 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 302 transitions. Word has length 283 [2020-10-24 02:28:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:38,202 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 302 transitions. [2020-10-24 02:28:38,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-24 02:28:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 302 transitions. [2020-10-24 02:28:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-24 02:28:38,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:38,205 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] [2020-10-24 02:28:38,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-24 02:28:38,205 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash 568450417, now seen corresponding path program 31 times [2020-10-24 02:28:38,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:38,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444818627] [2020-10-24 02:28:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-24 02:28:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-24 02:28:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 02:28:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:28:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:28:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:28:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:28:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-24 02:28:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-24 02:28:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-24 02:28:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-24 02:28:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-24 02:28:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:28:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:28:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:28:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:28:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 709 proven. 827 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-24 02:28:39,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444818627] [2020-10-24 02:28:39,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:39,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-24 02:28:39,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224463768] [2020-10-24 02:28:39,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-24 02:28:39,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:39,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-24 02:28:39,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2020-10-24 02:28:39,228 INFO L87 Difference]: Start difference. First operand 299 states and 302 transitions. Second operand 38 states. [2020-10-24 02:28:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:43,837 INFO L93 Difference]: Finished difference Result 557 states and 611 transitions. [2020-10-24 02:28:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-24 02:28:43,838 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 293 [2020-10-24 02:28:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:43,841 INFO L225 Difference]: With dead ends: 557 [2020-10-24 02:28:43,841 INFO L226 Difference]: Without dead ends: 444 [2020-10-24 02:28:43,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2029, Invalid=5627, Unknown=0, NotChecked=0, Total=7656 [2020-10-24 02:28:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-24 02:28:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 305. [2020-10-24 02:28:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-24 02:28:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 308 transitions. [2020-10-24 02:28:43,913 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 308 transitions. Word has length 293 [2020-10-24 02:28:43,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:43,913 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 308 transitions. [2020-10-24 02:28:43,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-24 02:28:43,913 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 308 transitions. [2020-10-24 02:28:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-24 02:28:43,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:43,915 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] [2020-10-24 02:28:43,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-24 02:28:43,916 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash -975577095, now seen corresponding path program 32 times [2020-10-24 02:28:43,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:43,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530654438] [2020-10-24 02:28:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:28:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-24 02:28:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:28:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-24 02:28:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:28:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-24 02:28:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:28:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:28:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-24 02:28:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 02:28:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-24 02:28:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:28:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:28:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:28:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:28:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:28:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2114 backedges. 784 proven. 850 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-24 02:28:44,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530654438] [2020-10-24 02:28:44,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:44,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-24 02:28:44,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070117097] [2020-10-24 02:28:44,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-24 02:28:44,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-24 02:28:44,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-10-24 02:28:44,568 INFO L87 Difference]: Start difference. First operand 305 states and 308 transitions. Second operand 23 states. [2020-10-24 02:28:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:46,391 INFO L93 Difference]: Finished difference Result 324 states and 327 transitions. [2020-10-24 02:28:46,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-24 02:28:46,392 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 299 [2020-10-24 02:28:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:46,395 INFO L225 Difference]: With dead ends: 324 [2020-10-24 02:28:46,395 INFO L226 Difference]: Without dead ends: 320 [2020-10-24 02:28:46,395 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 [2020-10-24 02:28:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-24 02:28:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2020-10-24 02:28:46,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-24 02:28:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 318 transitions. [2020-10-24 02:28:46,465 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 318 transitions. Word has length 299 [2020-10-24 02:28:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:46,465 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 318 transitions. [2020-10-24 02:28:46,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-24 02:28:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 318 transitions. [2020-10-24 02:28:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-24 02:28:46,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:46,468 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] [2020-10-24 02:28:46,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-24 02:28:46,468 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:46,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2073392548, now seen corresponding path program 33 times [2020-10-24 02:28:46,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:46,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566548820] [2020-10-24 02:28:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 02:28:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-24 02:28:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:28:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-24 02:28:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:28:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-24 02:28:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:28:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:28:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-24 02:28:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 02:28:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-24 02:28:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:28:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:28:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:28:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:28:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:28:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:28:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 804 proven. 930 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-24 02:28:47,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566548820] [2020-10-24 02:28:47,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:47,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-24 02:28:47,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199212483] [2020-10-24 02:28:47,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-24 02:28:47,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:47,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-24 02:28:47,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 02:28:47,558 INFO L87 Difference]: Start difference. First operand 315 states and 318 transitions. Second operand 40 states. [2020-10-24 02:28:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:52,702 INFO L93 Difference]: Finished difference Result 587 states and 644 transitions. [2020-10-24 02:28:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-24 02:28:52,703 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 309 [2020-10-24 02:28:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:52,706 INFO L225 Difference]: With dead ends: 587 [2020-10-24 02:28:52,706 INFO L226 Difference]: Without dead ends: 468 [2020-10-24 02:28:52,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2273, Invalid=6283, Unknown=0, NotChecked=0, Total=8556 [2020-10-24 02:28:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-24 02:28:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 321. [2020-10-24 02:28:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-24 02:28:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 324 transitions. [2020-10-24 02:28:52,782 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 324 transitions. Word has length 309 [2020-10-24 02:28:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:52,783 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 324 transitions. [2020-10-24 02:28:52,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-24 02:28:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 324 transitions. [2020-10-24 02:28:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-24 02:28:52,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:52,785 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] [2020-10-24 02:28:52,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-24 02:28:52,786 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:52,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:52,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1569155116, now seen corresponding path program 34 times [2020-10-24 02:28:52,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:52,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930144794] [2020-10-24 02:28:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:28:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:28:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:28:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-24 02:28:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-24 02:28:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-24 02:28:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 02:28:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-24 02:28:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:28:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:28:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:28:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-24 02:28:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:28:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:28:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:28:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:28:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:28:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2382 backedges. 884 proven. 954 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-24 02:28:53,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930144794] [2020-10-24 02:28:53,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:53,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-24 02:28:53,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847104038] [2020-10-24 02:28:53,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-24 02:28:53,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:53,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-24 02:28:53,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=354, Unknown=0, NotChecked=0, Total=552 [2020-10-24 02:28:53,437 INFO L87 Difference]: Start difference. First operand 321 states and 324 transitions. Second operand 24 states. [2020-10-24 02:28:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:28:55,321 INFO L93 Difference]: Finished difference Result 340 states and 343 transitions. [2020-10-24 02:28:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-24 02:28:55,322 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 315 [2020-10-24 02:28:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:28:55,324 INFO L225 Difference]: With dead ends: 340 [2020-10-24 02:28:55,324 INFO L226 Difference]: Without dead ends: 336 [2020-10-24 02:28:55,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2020-10-24 02:28:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-24 02:28:55,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 331. [2020-10-24 02:28:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-24 02:28:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 334 transitions. [2020-10-24 02:28:55,406 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 334 transitions. Word has length 315 [2020-10-24 02:28:55,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:28:55,407 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 334 transitions. [2020-10-24 02:28:55,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-24 02:28:55,407 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 334 transitions. [2020-10-24 02:28:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-24 02:28:55,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:28:55,409 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] [2020-10-24 02:28:55,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-24 02:28:55,409 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:28:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:28:55,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1200134679, now seen corresponding path program 35 times [2020-10-24 02:28:55,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:28:55,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793412554] [2020-10-24 02:28:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:28:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:28:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 02:28:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:28:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 02:28:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-24 02:28:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-24 02:28:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-24 02:28:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 02:28:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-24 02:28:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:28:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:28:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:28:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-24 02:28:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:28:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:28:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:28:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:28:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:28:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:28:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:28:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 905 proven. 1039 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-10-24 02:28:56,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793412554] [2020-10-24 02:28:56,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:28:56,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-24 02:28:56,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284152437] [2020-10-24 02:28:56,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-24 02:28:56,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:28:56,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-24 02:28:56,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2020-10-24 02:28:56,678 INFO L87 Difference]: Start difference. First operand 331 states and 334 transitions. Second operand 42 states. [2020-10-24 02:29:01,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:01,880 INFO L93 Difference]: Finished difference Result 617 states and 677 transitions. [2020-10-24 02:29:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-24 02:29:01,881 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 325 [2020-10-24 02:29:01,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:01,884 INFO L225 Difference]: With dead ends: 617 [2020-10-24 02:29:01,884 INFO L226 Difference]: Without dead ends: 492 [2020-10-24 02:29:01,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2531, Invalid=6975, Unknown=0, NotChecked=0, Total=9506 [2020-10-24 02:29:01,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-24 02:29:01,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 337. [2020-10-24 02:29:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-24 02:29:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 340 transitions. [2020-10-24 02:29:01,974 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 340 transitions. Word has length 325 [2020-10-24 02:29:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:01,974 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 340 transitions. [2020-10-24 02:29:01,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-24 02:29:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 340 transitions. [2020-10-24 02:29:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-24 02:29:01,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:01,977 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] [2020-10-24 02:29:01,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-24 02:29:01,977 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:01,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1785430881, now seen corresponding path program 36 times [2020-10-24 02:29:01,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:01,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348936231] [2020-10-24 02:29:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:29:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-24 02:29:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-24 02:29:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:29:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:29:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-24 02:29:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 02:29:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:29:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 02:29:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:29:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:29:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-24 02:29:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:29:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:29:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:29:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:29:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:29:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:29:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2666 backedges. 990 proven. 1064 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-10-24 02:29:02,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348936231] [2020-10-24 02:29:02,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:02,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-24 02:29:02,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649427032] [2020-10-24 02:29:02,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-24 02:29:02,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:02,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-24 02:29:02,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=382, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:29:02,622 INFO L87 Difference]: Start difference. First operand 337 states and 340 transitions. Second operand 25 states. [2020-10-24 02:29:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:04,572 INFO L93 Difference]: Finished difference Result 356 states and 359 transitions. [2020-10-24 02:29:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-24 02:29:04,573 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 331 [2020-10-24 02:29:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:04,575 INFO L225 Difference]: With dead ends: 356 [2020-10-24 02:29:04,575 INFO L226 Difference]: Without dead ends: 352 [2020-10-24 02:29:04,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=655, Invalid=1601, Unknown=0, NotChecked=0, Total=2256 [2020-10-24 02:29:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-24 02:29:04,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 347. [2020-10-24 02:29:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-24 02:29:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 350 transitions. [2020-10-24 02:29:04,659 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 350 transitions. Word has length 331 [2020-10-24 02:29:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:04,661 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 350 transitions. [2020-10-24 02:29:04,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-24 02:29:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 350 transitions. [2020-10-24 02:29:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-24 02:29:04,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:04,664 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] [2020-10-24 02:29:04,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-24 02:29:04,664 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1409874634, now seen corresponding path program 37 times [2020-10-24 02:29:04,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:04,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385845118] [2020-10-24 02:29:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-24 02:29:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-24 02:29:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-24 02:29:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:29:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:29:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-24 02:29:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 02:29:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:29:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 02:29:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:29:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:29:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-24 02:29:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:29:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:29:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:29:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:29:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:29:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:29:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:05,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:29:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 1012 proven. 1154 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-24 02:29:06,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385845118] [2020-10-24 02:29:06,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:06,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-24 02:29:06,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866860687] [2020-10-24 02:29:06,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-24 02:29:06,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:06,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-24 02:29:06,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=1445, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 02:29:06,042 INFO L87 Difference]: Start difference. First operand 347 states and 350 transitions. Second operand 44 states. [2020-10-24 02:29:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:11,606 INFO L93 Difference]: Finished difference Result 647 states and 710 transitions. [2020-10-24 02:29:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-24 02:29:11,606 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 341 [2020-10-24 02:29:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:11,610 INFO L225 Difference]: With dead ends: 647 [2020-10-24 02:29:11,610 INFO L226 Difference]: Without dead ends: 516 [2020-10-24 02:29:11,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2216 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2803, Invalid=7703, Unknown=0, NotChecked=0, Total=10506 [2020-10-24 02:29:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-24 02:29:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 353. [2020-10-24 02:29:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-24 02:29:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 356 transitions. [2020-10-24 02:29:11,702 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 356 transitions. Word has length 341 [2020-10-24 02:29:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:11,702 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 356 transitions. [2020-10-24 02:29:11,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-24 02:29:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 356 transitions. [2020-10-24 02:29:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-24 02:29:11,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:11,705 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] [2020-10-24 02:29:11,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-24 02:29:11,705 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:11,706 INFO L82 PathProgramCache]: Analyzing trace with hash -61944494, now seen corresponding path program 38 times [2020-10-24 02:29:11,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:11,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307242586] [2020-10-24 02:29:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-24 02:29:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-24 02:29:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:29:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 02:29:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-24 02:29:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:29:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:29:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:29:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-24 02:29:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:29:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:29:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:29:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:29:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:29:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:29:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:29:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:29:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:29:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:29:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 1102 proven. 1180 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-24 02:29:12,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307242586] [2020-10-24 02:29:12,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:12,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-24 02:29:12,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663239382] [2020-10-24 02:29:12,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-24 02:29:12,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:12,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-24 02:29:12,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=411, Unknown=0, NotChecked=0, Total=650 [2020-10-24 02:29:12,380 INFO L87 Difference]: Start difference. First operand 353 states and 356 transitions. Second operand 26 states. [2020-10-24 02:29:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:14,530 INFO L93 Difference]: Finished difference Result 372 states and 375 transitions. [2020-10-24 02:29:14,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-24 02:29:14,530 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 347 [2020-10-24 02:29:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:14,533 INFO L225 Difference]: With dead ends: 372 [2020-10-24 02:29:14,533 INFO L226 Difference]: Without dead ends: 368 [2020-10-24 02:29:14,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=718, Invalid=1732, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 02:29:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-24 02:29:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 363. [2020-10-24 02:29:14,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-24 02:29:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 366 transitions. [2020-10-24 02:29:14,598 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 366 transitions. Word has length 347 [2020-10-24 02:29:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:14,598 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 366 transitions. [2020-10-24 02:29:14,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-24 02:29:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 366 transitions. [2020-10-24 02:29:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-24 02:29:14,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:14,600 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] [2020-10-24 02:29:14,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-24 02:29:14,601 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:14,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1375189059, now seen corresponding path program 39 times [2020-10-24 02:29:14,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:14,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379478093] [2020-10-24 02:29:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-24 02:29:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-24 02:29:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:29:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 02:29:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-24 02:29:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:29:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:29:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:29:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-24 02:29:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:29:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:29:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:29:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:29:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:29:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:29:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:29:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:29:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:29:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:29:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:29:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 1125 proven. 1275 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-10-24 02:29:16,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379478093] [2020-10-24 02:29:16,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:16,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-24 02:29:16,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472801321] [2020-10-24 02:29:16,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-24 02:29:16,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:16,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-24 02:29:16,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2020-10-24 02:29:16,050 INFO L87 Difference]: Start difference. First operand 363 states and 366 transitions. Second operand 46 states. [2020-10-24 02:29:22,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:22,122 INFO L93 Difference]: Finished difference Result 677 states and 743 transitions. [2020-10-24 02:29:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-24 02:29:22,123 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 357 [2020-10-24 02:29:22,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:22,126 INFO L225 Difference]: With dead ends: 677 [2020-10-24 02:29:22,126 INFO L226 Difference]: Without dead ends: 540 [2020-10-24 02:29:22,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2443 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3089, Invalid=8467, Unknown=0, NotChecked=0, Total=11556 [2020-10-24 02:29:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-24 02:29:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 369. [2020-10-24 02:29:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-24 02:29:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 372 transitions. [2020-10-24 02:29:22,225 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 372 transitions. Word has length 357 [2020-10-24 02:29:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:22,225 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 372 transitions. [2020-10-24 02:29:22,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-24 02:29:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 372 transitions. [2020-10-24 02:29:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-24 02:29:22,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:22,228 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] [2020-10-24 02:29:22,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-24 02:29:22,228 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:22,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1588070981, now seen corresponding path program 40 times [2020-10-24 02:29:22,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:22,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88799049] [2020-10-24 02:29:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:29:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:29:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:29:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:29:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-24 02:29:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-24 02:29:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-24 02:29:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-24 02:29:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-24 02:29:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:29:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:29:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:29:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:29:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:29:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:29:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:29:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:29:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:29:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:29:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:29:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 1220 proven. 1302 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-10-24 02:29:22,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88799049] [2020-10-24 02:29:22,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:22,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-24 02:29:22,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604405307] [2020-10-24 02:29:22,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-24 02:29:22,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:22,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-24 02:29:22,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=441, Unknown=0, NotChecked=0, Total=702 [2020-10-24 02:29:22,951 INFO L87 Difference]: Start difference. First operand 369 states and 372 transitions. Second operand 27 states. [2020-10-24 02:29:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:25,219 INFO L93 Difference]: Finished difference Result 388 states and 391 transitions. [2020-10-24 02:29:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-24 02:29:25,220 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 363 [2020-10-24 02:29:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:25,223 INFO L225 Difference]: With dead ends: 388 [2020-10-24 02:29:25,223 INFO L226 Difference]: Without dead ends: 384 [2020-10-24 02:29:25,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=784, Invalid=1868, Unknown=0, NotChecked=0, Total=2652 [2020-10-24 02:29:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-24 02:29:25,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2020-10-24 02:29:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-24 02:29:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 382 transitions. [2020-10-24 02:29:25,327 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 382 transitions. Word has length 363 [2020-10-24 02:29:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:25,330 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 382 transitions. [2020-10-24 02:29:25,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-24 02:29:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 382 transitions. [2020-10-24 02:29:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-24 02:29:25,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:25,334 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] [2020-10-24 02:29:25,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-24 02:29:25,334 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:25,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:25,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1541656336, now seen corresponding path program 41 times [2020-10-24 02:29:25,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:25,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285499246] [2020-10-24 02:29:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-24 02:29:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:29:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 02:29:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:29:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-24 02:29:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-24 02:29:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-24 02:29:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-24 02:29:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-24 02:29:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:29:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:29:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:29:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:29:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:29:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:29:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:29:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:29:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:29:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:29:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:29:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:29:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 1244 proven. 1402 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-24 02:29:26,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285499246] [2020-10-24 02:29:26,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:26,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-24 02:29:26,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634856792] [2020-10-24 02:29:26,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-24 02:29:26,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:26,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-24 02:29:26,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=1721, Unknown=0, NotChecked=0, Total=2256 [2020-10-24 02:29:26,895 INFO L87 Difference]: Start difference. First operand 379 states and 382 transitions. Second operand 48 states. [2020-10-24 02:29:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:33,944 INFO L93 Difference]: Finished difference Result 707 states and 776 transitions. [2020-10-24 02:29:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-24 02:29:33,945 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 373 [2020-10-24 02:29:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:33,949 INFO L225 Difference]: With dead ends: 707 [2020-10-24 02:29:33,949 INFO L226 Difference]: Without dead ends: 564 [2020-10-24 02:29:33,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2681 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3389, Invalid=9267, Unknown=0, NotChecked=0, Total=12656 [2020-10-24 02:29:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-24 02:29:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 385. [2020-10-24 02:29:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-24 02:29:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 388 transitions. [2020-10-24 02:29:34,043 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 388 transitions. Word has length 373 [2020-10-24 02:29:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:34,044 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 388 transitions. [2020-10-24 02:29:34,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-24 02:29:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 388 transitions. [2020-10-24 02:29:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-24 02:29:34,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:34,045 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] [2020-10-24 02:29:34,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-24 02:29:34,046 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:34,046 INFO L82 PathProgramCache]: Analyzing trace with hash -885660808, now seen corresponding path program 42 times [2020-10-24 02:29:34,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:34,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046560691] [2020-10-24 02:29:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-24 02:29:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:29:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-24 02:29:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:29:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:29:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-24 02:29:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 02:29:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-24 02:29:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:29:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:29:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:29:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:29:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:29:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:29:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:29:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:29:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:29:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:29:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:29:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:29:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:29:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3614 backedges. 1344 proven. 1430 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-24 02:29:34,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046560691] [2020-10-24 02:29:34,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:34,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-24 02:29:34,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539723161] [2020-10-24 02:29:34,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-24 02:29:34,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:34,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-24 02:29:34,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=472, Unknown=0, NotChecked=0, Total=756 [2020-10-24 02:29:34,834 INFO L87 Difference]: Start difference. First operand 385 states and 388 transitions. Second operand 28 states. [2020-10-24 02:29:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:37,164 INFO L93 Difference]: Finished difference Result 404 states and 407 transitions. [2020-10-24 02:29:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-24 02:29:37,170 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 379 [2020-10-24 02:29:37,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:37,172 INFO L225 Difference]: With dead ends: 404 [2020-10-24 02:29:37,172 INFO L226 Difference]: Without dead ends: 400 [2020-10-24 02:29:37,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=853, Invalid=2009, Unknown=0, NotChecked=0, Total=2862 [2020-10-24 02:29:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-24 02:29:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 395. [2020-10-24 02:29:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-24 02:29:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 398 transitions. [2020-10-24 02:29:37,276 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 398 transitions. Word has length 379 [2020-10-24 02:29:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:37,277 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 398 transitions. [2020-10-24 02:29:37,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-24 02:29:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 398 transitions. [2020-10-24 02:29:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-24 02:29:37,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:37,280 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] [2020-10-24 02:29:37,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-24 02:29:37,280 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:37,280 INFO L82 PathProgramCache]: Analyzing trace with hash 159278691, now seen corresponding path program 43 times [2020-10-24 02:29:37,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:37,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395074032] [2020-10-24 02:29:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-24 02:29:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-24 02:29:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-24 02:29:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:29:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:29:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-24 02:29:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 02:29:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-24 02:29:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:29:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:29:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:29:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:29:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:29:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:29:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:29:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:29:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:29:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:29:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:29:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:29:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:29:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:29:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 1369 proven. 1535 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-10-24 02:29:38,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395074032] [2020-10-24 02:29:38,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:38,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-24 02:29:38,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884687546] [2020-10-24 02:29:38,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-24 02:29:38,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:39,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-24 02:29:39,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=1868, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 02:29:39,000 INFO L87 Difference]: Start difference. First operand 395 states and 398 transitions. Second operand 50 states. [2020-10-24 02:29:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:46,147 INFO L93 Difference]: Finished difference Result 737 states and 809 transitions. [2020-10-24 02:29:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-24 02:29:46,148 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 389 [2020-10-24 02:29:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:46,151 INFO L225 Difference]: With dead ends: 737 [2020-10-24 02:29:46,151 INFO L226 Difference]: Without dead ends: 588 [2020-10-24 02:29:46,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2930 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3703, Invalid=10103, Unknown=0, NotChecked=0, Total=13806 [2020-10-24 02:29:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-24 02:29:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 401. [2020-10-24 02:29:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-24 02:29:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 404 transitions. [2020-10-24 02:29:46,228 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 404 transitions. Word has length 389 [2020-10-24 02:29:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:46,228 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 404 transitions. [2020-10-24 02:29:46,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-24 02:29:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 404 transitions. [2020-10-24 02:29:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-24 02:29:46,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:46,231 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] [2020-10-24 02:29:46,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-24 02:29:46,231 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash -718141205, now seen corresponding path program 44 times [2020-10-24 02:29:46,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:46,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618521485] [2020-10-24 02:29:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-24 02:29:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-24 02:29:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-24 02:29:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 02:29:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-24 02:29:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:29:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:29:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:29:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-24 02:29:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:29:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:29:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:29:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:29:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:29:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:29:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:29:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:29:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:29:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:29:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:29:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:29:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:29:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 1474 proven. 1564 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-10-24 02:29:47,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618521485] [2020-10-24 02:29:47,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:47,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-24 02:29:47,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380626515] [2020-10-24 02:29:47,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-24 02:29:47,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:47,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-24 02:29:47,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=504, Unknown=0, NotChecked=0, Total=812 [2020-10-24 02:29:47,162 INFO L87 Difference]: Start difference. First operand 401 states and 404 transitions. Second operand 29 states. [2020-10-24 02:29:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:49,669 INFO L93 Difference]: Finished difference Result 420 states and 423 transitions. [2020-10-24 02:29:49,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-24 02:29:49,670 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 395 [2020-10-24 02:29:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:49,672 INFO L225 Difference]: With dead ends: 420 [2020-10-24 02:29:49,672 INFO L226 Difference]: Without dead ends: 416 [2020-10-24 02:29:49,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=925, Invalid=2155, Unknown=0, NotChecked=0, Total=3080 [2020-10-24 02:29:49,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-24 02:29:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2020-10-24 02:29:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-10-24 02:29:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 414 transitions. [2020-10-24 02:29:49,742 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 414 transitions. Word has length 395 [2020-10-24 02:29:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:49,743 INFO L481 AbstractCegarLoop]: Abstraction has 411 states and 414 transitions. [2020-10-24 02:29:49,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-24 02:29:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 414 transitions. [2020-10-24 02:29:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-24 02:29:49,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:49,746 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] [2020-10-24 02:29:49,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-24 02:29:49,746 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:49,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:49,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1190356970, now seen corresponding path program 45 times [2020-10-24 02:29:49,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:49,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319171776] [2020-10-24 02:29:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:29:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-24 02:29:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-24 02:29:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-24 02:29:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 02:29:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-24 02:29:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:29:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:29:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:29:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-24 02:29:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:29:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:29:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:29:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:29:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:29:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:29:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:29:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:29:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:29:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:29:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:29:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:29:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:29:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:29:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:29:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 1500 proven. 1674 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-24 02:29:51,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319171776] [2020-10-24 02:29:51,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:29:51,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-24 02:29:51,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834856223] [2020-10-24 02:29:51,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-24 02:29:51,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:29:51,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-24 02:29:51,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2020-10-24 02:29:51,595 INFO L87 Difference]: Start difference. First operand 411 states and 414 transitions. Second operand 52 states. [2020-10-24 02:29:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:29:59,686 INFO L93 Difference]: Finished difference Result 767 states and 842 transitions. [2020-10-24 02:29:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-24 02:29:59,687 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 405 [2020-10-24 02:29:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:29:59,691 INFO L225 Difference]: With dead ends: 767 [2020-10-24 02:29:59,691 INFO L226 Difference]: Without dead ends: 612 [2020-10-24 02:29:59,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=4031, Invalid=10975, Unknown=0, NotChecked=0, Total=15006 [2020-10-24 02:29:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-10-24 02:29:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 417. [2020-10-24 02:29:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-24 02:29:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 420 transitions. [2020-10-24 02:29:59,811 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 420 transitions. Word has length 405 [2020-10-24 02:29:59,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:29:59,811 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 420 transitions. [2020-10-24 02:29:59,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-24 02:29:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 420 transitions. [2020-10-24 02:29:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-24 02:29:59,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:29:59,815 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] [2020-10-24 02:29:59,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-24 02:29:59,815 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:29:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:29:59,816 INFO L82 PathProgramCache]: Analyzing trace with hash 393882270, now seen corresponding path program 46 times [2020-10-24 02:29:59,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:29:59,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060769553] [2020-10-24 02:29:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:29:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:30:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:30:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-24 02:30:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 02:30:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:30:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 02:30:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:30:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:30:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-24 02:30:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:30:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:30:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:30:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:30:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:30:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:30:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:30:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-24 02:30:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-24 02:30:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-24 02:30:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:30:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-24 02:30:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-24 02:30:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-10-24 02:30:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4326 backedges. 1610 proven. 1704 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-24 02:30:00,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060769553] [2020-10-24 02:30:00,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:00,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-24 02:30:00,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599007417] [2020-10-24 02:30:00,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-24 02:30:00,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:00,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-24 02:30:00,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=537, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:30:00,733 INFO L87 Difference]: Start difference. First operand 417 states and 420 transitions. Second operand 30 states. [2020-10-24 02:30:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:03,412 INFO L93 Difference]: Finished difference Result 436 states and 439 transitions. [2020-10-24 02:30:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-24 02:30:03,413 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 411 [2020-10-24 02:30:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:03,415 INFO L225 Difference]: With dead ends: 436 [2020-10-24 02:30:03,416 INFO L226 Difference]: Without dead ends: 432 [2020-10-24 02:30:03,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1000, Invalid=2306, Unknown=0, NotChecked=0, Total=3306 [2020-10-24 02:30:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-24 02:30:03,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 427. [2020-10-24 02:30:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-24 02:30:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 430 transitions. [2020-10-24 02:30:03,491 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 430 transitions. Word has length 411 [2020-10-24 02:30:03,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:03,492 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 430 transitions. [2020-10-24 02:30:03,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-24 02:30:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 430 transitions. [2020-10-24 02:30:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-24 02:30:03,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:03,494 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] [2020-10-24 02:30:03,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-24 02:30:03,494 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1481143817, now seen corresponding path program 47 times [2020-10-24 02:30:03,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:03,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973278078] [2020-10-24 02:30:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:30:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:30:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-24 02:30:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 02:30:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:30:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 02:30:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:30:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:30:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-24 02:30:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:30:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:30:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:30:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:30:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:30:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:30:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:30:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-24 02:30:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-24 02:30:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-24 02:30:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:30:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-24 02:30:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-24 02:30:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-10-24 02:30:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-24 02:30:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 1637 proven. 1819 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-10-24 02:30:05,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973278078] [2020-10-24 02:30:05,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:05,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-24 02:30:05,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255558912] [2020-10-24 02:30:05,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-24 02:30:05,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:05,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-24 02:30:05,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=682, Invalid=2180, Unknown=0, NotChecked=0, Total=2862 [2020-10-24 02:30:05,546 INFO L87 Difference]: Start difference. First operand 427 states and 430 transitions. Second operand 54 states. [2020-10-24 02:30:14,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:14,024 INFO L93 Difference]: Finished difference Result 797 states and 875 transitions. [2020-10-24 02:30:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-24 02:30:14,025 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 421 [2020-10-24 02:30:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:14,028 INFO L225 Difference]: With dead ends: 797 [2020-10-24 02:30:14,028 INFO L226 Difference]: Without dead ends: 636 [2020-10-24 02:30:14,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3461 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=4373, Invalid=11883, Unknown=0, NotChecked=0, Total=16256 [2020-10-24 02:30:14,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-24 02:30:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 433. [2020-10-24 02:30:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-24 02:30:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 436 transitions. [2020-10-24 02:30:14,114 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 436 transitions. Word has length 421 [2020-10-24 02:30:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:14,115 INFO L481 AbstractCegarLoop]: Abstraction has 433 states and 436 transitions. [2020-10-24 02:30:14,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-24 02:30:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 436 transitions. [2020-10-24 02:30:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-24 02:30:14,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:14,118 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] [2020-10-24 02:30:14,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-24 02:30:14,118 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash -141559663, now seen corresponding path program 48 times [2020-10-24 02:30:14,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:14,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836809941] [2020-10-24 02:30:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 02:30:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-24 02:30:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:30:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:30:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:30:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-24 02:30:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:30:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:30:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:30:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:30:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:30:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:30:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:30:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:30:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:30:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:30:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:30:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-24 02:30:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-24 02:30:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-24 02:30:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-24 02:30:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-24 02:30:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:30:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-24 02:30:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4706 backedges. 1752 proven. 1850 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-10-24 02:30:15,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836809941] [2020-10-24 02:30:15,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:15,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-24 02:30:15,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072218500] [2020-10-24 02:30:15,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-24 02:30:15,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:15,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-24 02:30:15,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=571, Unknown=0, NotChecked=0, Total=930 [2020-10-24 02:30:15,101 INFO L87 Difference]: Start difference. First operand 433 states and 436 transitions. Second operand 31 states. [2020-10-24 02:30:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:17,921 INFO L93 Difference]: Finished difference Result 452 states and 455 transitions. [2020-10-24 02:30:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-24 02:30:17,923 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 427 [2020-10-24 02:30:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:17,926 INFO L225 Difference]: With dead ends: 452 [2020-10-24 02:30:17,926 INFO L226 Difference]: Without dead ends: 448 [2020-10-24 02:30:17,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1078, Invalid=2462, Unknown=0, NotChecked=0, Total=3540 [2020-10-24 02:30:17,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-24 02:30:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2020-10-24 02:30:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-10-24 02:30:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 446 transitions. [2020-10-24 02:30:18,007 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 446 transitions. Word has length 427 [2020-10-24 02:30:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:18,008 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 446 transitions. [2020-10-24 02:30:18,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-24 02:30:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 446 transitions. [2020-10-24 02:30:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-24 02:30:18,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:18,011 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] [2020-10-24 02:30:18,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-24 02:30:18,011 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:18,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1515696188, now seen corresponding path program 49 times [2020-10-24 02:30:18,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:18,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59311841] [2020-10-24 02:30:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 02:30:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-24 02:30:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-24 02:30:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:30:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:30:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-24 02:30:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:30:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:30:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:30:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:30:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:30:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:30:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:30:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:30:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:30:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:30:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:30:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-24 02:30:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-24 02:30:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-24 02:30:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-24 02:30:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-24 02:30:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:30:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-24 02:30:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-24 02:30:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 1780 proven. 1970 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-24 02:30:20,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59311841] [2020-10-24 02:30:20,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:20,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-24 02:30:20,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469870862] [2020-10-24 02:30:20,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-24 02:30:20,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:20,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-24 02:30:20,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=2345, Unknown=0, NotChecked=0, Total=3080 [2020-10-24 02:30:20,235 INFO L87 Difference]: Start difference. First operand 443 states and 446 transitions. Second operand 56 states. [2020-10-24 02:30:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:29,206 INFO L93 Difference]: Finished difference Result 827 states and 908 transitions. [2020-10-24 02:30:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-24 02:30:29,207 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 437 [2020-10-24 02:30:29,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:29,210 INFO L225 Difference]: With dead ends: 827 [2020-10-24 02:30:29,211 INFO L226 Difference]: Without dead ends: 660 [2020-10-24 02:30:29,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3743 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4729, Invalid=12827, Unknown=0, NotChecked=0, Total=17556 [2020-10-24 02:30:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-24 02:30:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 449. [2020-10-24 02:30:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-24 02:30:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 452 transitions. [2020-10-24 02:30:29,301 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 452 transitions. Word has length 437 [2020-10-24 02:30:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:29,301 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 452 transitions. [2020-10-24 02:30:29,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-24 02:30:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 452 transitions. [2020-10-24 02:30:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-24 02:30:29,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:29,304 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] [2020-10-24 02:30:29,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-24 02:30:29,305 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1466359100, now seen corresponding path program 50 times [2020-10-24 02:30:29,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:29,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101208422] [2020-10-24 02:30:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:30:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-24 02:30:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-24 02:30:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-24 02:30:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-24 02:30:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-24 02:30:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:30:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:30:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:30:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:30:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:30:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:30:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:30:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:30:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:30:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:30:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:30:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:30:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-24 02:30:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-24 02:30:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-24 02:30:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-24 02:30:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-24 02:30:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-24 02:30:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-24 02:30:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5102 backedges. 1900 proven. 2002 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-24 02:30:30,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101208422] [2020-10-24 02:30:30,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:30,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-24 02:30:30,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058065964] [2020-10-24 02:30:30,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-24 02:30:30,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:30,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-24 02:30:30,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=606, Unknown=0, NotChecked=0, Total=992 [2020-10-24 02:30:30,331 INFO L87 Difference]: Start difference. First operand 449 states and 452 transitions. Second operand 32 states. [2020-10-24 02:30:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:33,635 INFO L93 Difference]: Finished difference Result 468 states and 471 transitions. [2020-10-24 02:30:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-24 02:30:33,636 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 443 [2020-10-24 02:30:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:33,639 INFO L225 Difference]: With dead ends: 468 [2020-10-24 02:30:33,639 INFO L226 Difference]: Without dead ends: 464 [2020-10-24 02:30:33,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1159, Invalid=2623, Unknown=0, NotChecked=0, Total=3782 [2020-10-24 02:30:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-24 02:30:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 459. [2020-10-24 02:30:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-24 02:30:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 462 transitions. [2020-10-24 02:30:33,738 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 462 transitions. Word has length 443 [2020-10-24 02:30:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:33,738 INFO L481 AbstractCegarLoop]: Abstraction has 459 states and 462 transitions. [2020-10-24 02:30:33,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-24 02:30:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 462 transitions. [2020-10-24 02:30:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-24 02:30:33,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:33,742 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] [2020-10-24 02:30:33,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-24 02:30:33,742 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:33,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:33,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1124333231, now seen corresponding path program 51 times [2020-10-24 02:30:33,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:33,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642436975] [2020-10-24 02:30:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 02:30:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-24 02:30:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-24 02:30:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-24 02:30:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-24 02:30:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-24 02:30:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:30:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:30:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:30:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:30:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:30:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:30:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:30:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:30:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:30:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:30:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:30:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:30:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-24 02:30:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-24 02:30:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-24 02:30:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-24 02:30:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-24 02:30:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-24 02:30:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-24 02:30:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:30:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 1929 proven. 2127 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-10-24 02:30:36,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642436975] [2020-10-24 02:30:36,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:36,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-24 02:30:36,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674754936] [2020-10-24 02:30:36,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-24 02:30:36,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:36,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-24 02:30:36,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=790, Invalid=2516, Unknown=0, NotChecked=0, Total=3306 [2020-10-24 02:30:36,178 INFO L87 Difference]: Start difference. First operand 459 states and 462 transitions. Second operand 58 states. [2020-10-24 02:30:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:45,671 INFO L93 Difference]: Finished difference Result 857 states and 941 transitions. [2020-10-24 02:30:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-24 02:30:45,672 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 453 [2020-10-24 02:30:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:45,676 INFO L225 Difference]: With dead ends: 857 [2020-10-24 02:30:45,676 INFO L226 Difference]: Without dead ends: 684 [2020-10-24 02:30:45,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4036 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=5099, Invalid=13807, Unknown=0, NotChecked=0, Total=18906 [2020-10-24 02:30:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-24 02:30:45,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 465. [2020-10-24 02:30:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-24 02:30:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 468 transitions. [2020-10-24 02:30:45,769 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 468 transitions. Word has length 453 [2020-10-24 02:30:45,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:45,769 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 468 transitions. [2020-10-24 02:30:45,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-24 02:30:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 468 transitions. [2020-10-24 02:30:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-24 02:30:45,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:45,771 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] [2020-10-24 02:30:45,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-24 02:30:45,771 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:45,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1851742519, now seen corresponding path program 52 times [2020-10-24 02:30:45,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:45,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203621504] [2020-10-24 02:30:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:30:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:30:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-24 02:30:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 02:30:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-24 02:30:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:30:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:30:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:30:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:30:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:30:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:30:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:30:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:30:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:30:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:30:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:30:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:30:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:30:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:30:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:30:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-24 02:30:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-24 02:30:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-24 02:30:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-24 02:30:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-24 02:30:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-24 02:30:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 2054 proven. 2160 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-10-24 02:30:46,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203621504] [2020-10-24 02:30:46,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:46,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-24 02:30:46,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654088761] [2020-10-24 02:30:46,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-24 02:30:46,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:46,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-24 02:30:46,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=642, Unknown=0, NotChecked=0, Total=1056 [2020-10-24 02:30:46,969 INFO L87 Difference]: Start difference. First operand 465 states and 468 transitions. Second operand 33 states. [2020-10-24 02:30:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:50,413 INFO L93 Difference]: Finished difference Result 484 states and 487 transitions. [2020-10-24 02:30:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-24 02:30:50,414 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 459 [2020-10-24 02:30:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:50,417 INFO L225 Difference]: With dead ends: 484 [2020-10-24 02:30:50,417 INFO L226 Difference]: Without dead ends: 480 [2020-10-24 02:30:50,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1243, Invalid=2789, Unknown=0, NotChecked=0, Total=4032 [2020-10-24 02:30:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-24 02:30:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2020-10-24 02:30:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-24 02:30:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 478 transitions. [2020-10-24 02:30:50,506 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 478 transitions. Word has length 459 [2020-10-24 02:30:50,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:50,506 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 478 transitions. [2020-10-24 02:30:50,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-24 02:30:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 478 transitions. [2020-10-24 02:30:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-24 02:30:50,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:50,508 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] [2020-10-24 02:30:50,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-24 02:30:50,508 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:50,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:50,509 INFO L82 PathProgramCache]: Analyzing trace with hash 700119394, now seen corresponding path program 53 times [2020-10-24 02:30:50,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:50,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735819898] [2020-10-24 02:30:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-24 02:30:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:30:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-24 02:30:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 02:30:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-24 02:30:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:30:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:30:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:30:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:30:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:30:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:30:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:30:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:30:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:30:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:30:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:30:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:30:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:30:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:30:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:30:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-24 02:30:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-24 02:30:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-24 02:30:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-24 02:30:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-24 02:30:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-24 02:30:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-24 02:30:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 2084 proven. 2290 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-24 02:30:53,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735819898] [2020-10-24 02:30:53,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:53,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-24 02:30:53,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813277154] [2020-10-24 02:30:53,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-24 02:30:53,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-24 02:30:53,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=847, Invalid=2693, Unknown=0, NotChecked=0, Total=3540 [2020-10-24 02:30:53,162 INFO L87 Difference]: Start difference. First operand 475 states and 478 transitions. Second operand 60 states. [2020-10-24 02:31:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:03,771 INFO L93 Difference]: Finished difference Result 887 states and 974 transitions. [2020-10-24 02:31:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-24 02:31:03,772 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 469 [2020-10-24 02:31:03,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:03,776 INFO L225 Difference]: With dead ends: 887 [2020-10-24 02:31:03,776 INFO L226 Difference]: Without dead ends: 708 [2020-10-24 02:31:03,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5483, Invalid=14823, Unknown=0, NotChecked=0, Total=20306 [2020-10-24 02:31:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-24 02:31:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 481. [2020-10-24 02:31:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-10-24 02:31:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 484 transitions. [2020-10-24 02:31:03,875 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 484 transitions. Word has length 469 [2020-10-24 02:31:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:03,876 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 484 transitions. [2020-10-24 02:31:03,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-24 02:31:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 484 transitions. [2020-10-24 02:31:03,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-24 02:31:03,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:03,878 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] [2020-10-24 02:31:03,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-24 02:31:03,878 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:03,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:03,879 INFO L82 PathProgramCache]: Analyzing trace with hash 542133226, now seen corresponding path program 54 times [2020-10-24 02:31:03,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:03,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217844591] [2020-10-24 02:31:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 02:31:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-24 02:31:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:31:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:31:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:31:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-24 02:31:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:31:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:31:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:31:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:31:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:31:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:31:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:31:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:31:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:31:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:31:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:31:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:31:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:31:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:31:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-24 02:31:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-24 02:31:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:31:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-24 02:31:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-10-24 02:31:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-24 02:31:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-24 02:31:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5942 backedges. 2214 proven. 2324 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-24 02:31:05,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217844591] [2020-10-24 02:31:05,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:05,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-24 02:31:05,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294445848] [2020-10-24 02:31:05,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-24 02:31:05,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:05,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-24 02:31:05,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=679, Unknown=0, NotChecked=0, Total=1122 [2020-10-24 02:31:05,195 INFO L87 Difference]: Start difference. First operand 481 states and 484 transitions. Second operand 34 states. [2020-10-24 02:31:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:09,028 INFO L93 Difference]: Finished difference Result 500 states and 503 transitions. [2020-10-24 02:31:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-24 02:31:09,029 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 475 [2020-10-24 02:31:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:09,032 INFO L225 Difference]: With dead ends: 500 [2020-10-24 02:31:09,033 INFO L226 Difference]: Without dead ends: 496 [2020-10-24 02:31:09,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1330, Invalid=2960, Unknown=0, NotChecked=0, Total=4290 [2020-10-24 02:31:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-24 02:31:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 491. [2020-10-24 02:31:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-24 02:31:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 494 transitions. [2020-10-24 02:31:09,128 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 494 transitions. Word has length 475 [2020-10-24 02:31:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:09,128 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 494 transitions. [2020-10-24 02:31:09,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-24 02:31:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 494 transitions. [2020-10-24 02:31:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-24 02:31:09,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:09,131 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] [2020-10-24 02:31:09,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-24 02:31:09,131 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:09,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2089707605, now seen corresponding path program 55 times [2020-10-24 02:31:09,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:09,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292945969] [2020-10-24 02:31:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 02:31:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-24 02:31:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-24 02:31:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:31:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:31:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-24 02:31:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:31:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:31:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:31:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:31:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:31:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:31:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:31:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:31:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:31:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:31:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:31:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:31:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:31:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:31:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-24 02:31:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-24 02:31:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:31:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-24 02:31:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-10-24 02:31:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-24 02:31:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-24 02:31:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-24 02:31:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 2245 proven. 2459 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-10-24 02:31:11,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292945969] [2020-10-24 02:31:11,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:11,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-24 02:31:11,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195549171] [2020-10-24 02:31:11,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-24 02:31:11,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:11,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-24 02:31:11,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=2876, Unknown=0, NotChecked=0, Total=3782 [2020-10-24 02:31:11,985 INFO L87 Difference]: Start difference. First operand 491 states and 494 transitions. Second operand 62 states. [2020-10-24 02:31:23,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:23,398 INFO L93 Difference]: Finished difference Result 917 states and 1007 transitions. [2020-10-24 02:31:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-24 02:31:23,399 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 485 [2020-10-24 02:31:23,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:23,403 INFO L225 Difference]: With dead ends: 917 [2020-10-24 02:31:23,403 INFO L226 Difference]: Without dead ends: 732 [2020-10-24 02:31:23,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=5881, Invalid=15875, Unknown=0, NotChecked=0, Total=21756 [2020-10-24 02:31:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-10-24 02:31:23,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 497. [2020-10-24 02:31:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-24 02:31:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 500 transitions. [2020-10-24 02:31:23,509 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 500 transitions. Word has length 485 [2020-10-24 02:31:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:23,509 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 500 transitions. [2020-10-24 02:31:23,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-24 02:31:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 500 transitions. [2020-10-24 02:31:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-24 02:31:23,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:23,511 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] [2020-10-24 02:31:23,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-24 02:31:23,512 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash -327308579, now seen corresponding path program 56 times [2020-10-24 02:31:23,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:23,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814820236] [2020-10-24 02:31:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 02:31:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:31:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 02:31:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:31:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:31:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-24 02:31:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:31:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:31:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:31:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:31:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:31:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:31:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:31:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-24 02:31:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-24 02:31:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-24 02:31:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:31:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-24 02:31:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-24 02:31:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-10-24 02:31:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-24 02:31:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-10-24 02:31:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-24 02:31:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-10-24 02:31:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-24 02:31:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:31:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-24 02:31:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-24 02:31:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 2380 proven. 2494 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-10-24 02:31:24,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814820236] [2020-10-24 02:31:24,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:24,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-24 02:31:24,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881812093] [2020-10-24 02:31:24,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-24 02:31:24,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:24,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-24 02:31:24,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=717, Unknown=0, NotChecked=0, Total=1190 [2020-10-24 02:31:24,819 INFO L87 Difference]: Start difference. First operand 497 states and 500 transitions. Second operand 35 states. [2020-10-24 02:31:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:28,529 INFO L93 Difference]: Finished difference Result 516 states and 519 transitions. [2020-10-24 02:31:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-24 02:31:28,530 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 491 [2020-10-24 02:31:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:28,533 INFO L225 Difference]: With dead ends: 516 [2020-10-24 02:31:28,533 INFO L226 Difference]: Without dead ends: 512 [2020-10-24 02:31:28,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1420, Invalid=3136, Unknown=0, NotChecked=0, Total=4556 [2020-10-24 02:31:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-24 02:31:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 507. [2020-10-24 02:31:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-24 02:31:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 510 transitions. [2020-10-24 02:31:28,652 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 510 transitions. Word has length 491 [2020-10-24 02:31:28,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:28,653 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 510 transitions. [2020-10-24 02:31:28,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-24 02:31:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 510 transitions. [2020-10-24 02:31:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-24 02:31:28,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:28,655 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] [2020-10-24 02:31:28,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-24 02:31:28,655 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:28,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:28,656 INFO L82 PathProgramCache]: Analyzing trace with hash 53736328, now seen corresponding path program 57 times [2020-10-24 02:31:28,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:28,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881570828] [2020-10-24 02:31:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 02:31:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-24 02:31:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 02:31:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:31:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:31:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-24 02:31:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:31:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:31:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:31:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:31:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:31:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:31:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:31:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-24 02:31:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-24 02:31:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-24 02:31:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:31:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-24 02:31:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-24 02:31:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-10-24 02:31:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-24 02:31:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-10-24 02:31:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-24 02:31:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-10-24 02:31:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-24 02:31:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:31:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-24 02:31:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-24 02:31:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-10-24 02:31:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 2412 proven. 2634 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-24 02:31:31,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881570828] [2020-10-24 02:31:31,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:31,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-24 02:31:31,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968077115] [2020-10-24 02:31:31,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-24 02:31:31,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:31,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-24 02:31:31,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=967, Invalid=3065, Unknown=0, NotChecked=0, Total=4032 [2020-10-24 02:31:31,851 INFO L87 Difference]: Start difference. First operand 507 states and 510 transitions. Second operand 64 states. [2020-10-24 02:31:44,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:44,213 INFO L93 Difference]: Finished difference Result 947 states and 1040 transitions. [2020-10-24 02:31:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-10-24 02:31:44,214 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 501 [2020-10-24 02:31:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:44,218 INFO L225 Difference]: With dead ends: 947 [2020-10-24 02:31:44,218 INFO L226 Difference]: Without dead ends: 756 [2020-10-24 02:31:44,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4981 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=6293, Invalid=16963, Unknown=0, NotChecked=0, Total=23256 [2020-10-24 02:31:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-24 02:31:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 513. [2020-10-24 02:31:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-24 02:31:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 516 transitions. [2020-10-24 02:31:44,338 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 516 transitions. Word has length 501 [2020-10-24 02:31:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:44,338 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 516 transitions. [2020-10-24 02:31:44,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-24 02:31:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 516 transitions. [2020-10-24 02:31:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-24 02:31:44,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:44,341 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] [2020-10-24 02:31:44,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-24 02:31:44,341 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:44,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1520248336, now seen corresponding path program 58 times [2020-10-24 02:31:44,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:44,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499803113] [2020-10-24 02:31:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:31:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:31:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-24 02:31:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:31:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:31:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:31:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:31:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:31:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:31:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:31:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:31:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:31:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:31:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:31:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-24 02:31:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-24 02:31:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-24 02:31:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-24 02:31:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-24 02:31:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:31:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-24 02:31:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-24 02:31:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-24 02:31:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-24 02:31:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-10-24 02:31:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-10-24 02:31:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-24 02:31:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-24 02:31:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-24 02:31:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6846 backedges. 2552 proven. 2670 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-24 02:31:45,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499803113] [2020-10-24 02:31:45,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:45,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-24 02:31:45,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335690130] [2020-10-24 02:31:45,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-24 02:31:45,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:45,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-24 02:31:45,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=756, Unknown=0, NotChecked=0, Total=1260 [2020-10-24 02:31:45,878 INFO L87 Difference]: Start difference. First operand 513 states and 516 transitions. Second operand 36 states. [2020-10-24 02:31:49,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:49,900 INFO L93 Difference]: Finished difference Result 532 states and 535 transitions. [2020-10-24 02:31:49,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-24 02:31:49,902 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 507 [2020-10-24 02:31:49,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:49,905 INFO L225 Difference]: With dead ends: 532 [2020-10-24 02:31:49,905 INFO L226 Difference]: Without dead ends: 528 [2020-10-24 02:31:49,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1513, Invalid=3317, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 02:31:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-10-24 02:31:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 523. [2020-10-24 02:31:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-24 02:31:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 526 transitions. [2020-10-24 02:31:50,013 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 526 transitions. Word has length 507 [2020-10-24 02:31:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:50,013 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 526 transitions. [2020-10-24 02:31:50,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-24 02:31:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 526 transitions. [2020-10-24 02:31:50,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-24 02:31:50,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:50,016 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] [2020-10-24 02:31:50,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-24 02:31:50,016 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:50,016 INFO L82 PathProgramCache]: Analyzing trace with hash 570772219, now seen corresponding path program 59 times [2020-10-24 02:31:50,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:50,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766643402] [2020-10-24 02:31:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-24 02:31:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:31:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-24 02:31:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:31:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:31:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:31:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:31:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:31:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:31:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:31:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:31:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:31:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:31:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:31:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-24 02:31:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-24 02:31:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-24 02:31:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-24 02:31:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-24 02:31:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:31:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-24 02:31:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-24 02:31:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-24 02:31:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-24 02:31:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-10-24 02:31:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-10-24 02:31:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-24 02:31:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-24 02:31:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-24 02:31:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-24 02:31:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 2585 proven. 2815 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-10-24 02:31:53,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766643402] [2020-10-24 02:31:53,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:53,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-24 02:31:53,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747916095] [2020-10-24 02:31:53,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-24 02:31:53,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:53,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-24 02:31:53,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1030, Invalid=3260, Unknown=0, NotChecked=0, Total=4290 [2020-10-24 02:31:53,663 INFO L87 Difference]: Start difference. First operand 523 states and 526 transitions. Second operand 66 states. [2020-10-24 02:32:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:07,120 INFO L93 Difference]: Finished difference Result 977 states and 1073 transitions. [2020-10-24 02:32:07,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-24 02:32:07,121 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 517 [2020-10-24 02:32:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:07,125 INFO L225 Difference]: With dead ends: 977 [2020-10-24 02:32:07,126 INFO L226 Difference]: Without dead ends: 780 [2020-10-24 02:32:07,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5318 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=6719, Invalid=18087, Unknown=0, NotChecked=0, Total=24806 [2020-10-24 02:32:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-10-24 02:32:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 529. [2020-10-24 02:32:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-10-24 02:32:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 532 transitions. [2020-10-24 02:32:07,258 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 532 transitions. Word has length 517 [2020-10-24 02:32:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:07,258 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 532 transitions. [2020-10-24 02:32:07,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-24 02:32:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 532 transitions. [2020-10-24 02:32:07,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-24 02:32:07,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:07,260 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] [2020-10-24 02:32:07,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-24 02:32:07,261 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:07,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1895273085, now seen corresponding path program 60 times [2020-10-24 02:32:07,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:07,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901867750] [2020-10-24 02:32:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-24 02:32:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-24 02:32:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-24 02:32:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:32:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:32:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:32:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:32:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:32:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:32:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:32:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:32:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:32:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:32:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:32:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:32:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-24 02:32:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-24 02:32:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-24 02:32:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-24 02:32:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-24 02:32:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-24 02:32:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-24 02:32:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:32:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-24 02:32:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-24 02:32:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-24 02:32:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-24 02:32:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-24 02:32:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-10-24 02:32:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-10-24 02:32:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7322 backedges. 2730 proven. 2852 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-10-24 02:32:08,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901867750] [2020-10-24 02:32:08,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:08,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-24 02:32:08,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421667476] [2020-10-24 02:32:08,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-24 02:32:08,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:08,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-24 02:32:08,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=796, Unknown=0, NotChecked=0, Total=1332 [2020-10-24 02:32:08,822 INFO L87 Difference]: Start difference. First operand 529 states and 532 transitions. Second operand 37 states. [2020-10-24 02:32:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:13,045 INFO L93 Difference]: Finished difference Result 548 states and 551 transitions. [2020-10-24 02:32:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-24 02:32:13,046 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 523 [2020-10-24 02:32:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:13,050 INFO L225 Difference]: With dead ends: 548 [2020-10-24 02:32:13,050 INFO L226 Difference]: Without dead ends: 544 [2020-10-24 02:32:13,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1609, Invalid=3503, Unknown=0, NotChecked=0, Total=5112 [2020-10-24 02:32:13,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-24 02:32:13,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 539. [2020-10-24 02:32:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-10-24 02:32:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 542 transitions. [2020-10-24 02:32:13,176 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 542 transitions. Word has length 523 [2020-10-24 02:32:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:13,176 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 542 transitions. [2020-10-24 02:32:13,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-24 02:32:13,177 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 542 transitions. [2020-10-24 02:32:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-24 02:32:13,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:13,179 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] [2020-10-24 02:32:13,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-24 02:32:13,180 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:13,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1560288942, now seen corresponding path program 61 times [2020-10-24 02:32:13,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:13,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046417028] [2020-10-24 02:32:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-24 02:32:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-24 02:32:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-24 02:32:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:32:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:32:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:32:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:32:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:32:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:32:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:32:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:32:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:32:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:32:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:32:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:32:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-24 02:32:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-24 02:32:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-24 02:32:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-24 02:32:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-24 02:32:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-24 02:32:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-24 02:32:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:32:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-24 02:32:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-24 02:32:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-24 02:32:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-24 02:32:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-24 02:32:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-10-24 02:32:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-10-24 02:32:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-24 02:32:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 2764 proven. 3002 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-24 02:32:16,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046417028] [2020-10-24 02:32:16,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:16,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-24 02:32:16,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963950690] [2020-10-24 02:32:16,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-24 02:32:16,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:16,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-24 02:32:16,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1095, Invalid=3461, Unknown=0, NotChecked=0, Total=4556 [2020-10-24 02:32:16,950 INFO L87 Difference]: Start difference. First operand 539 states and 542 transitions. Second operand 68 states. [2020-10-24 02:32:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:31,531 INFO L93 Difference]: Finished difference Result 1007 states and 1106 transitions. [2020-10-24 02:32:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-10-24 02:32:31,532 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 533 [2020-10-24 02:32:31,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:31,537 INFO L225 Difference]: With dead ends: 1007 [2020-10-24 02:32:31,537 INFO L226 Difference]: Without dead ends: 804 [2020-10-24 02:32:31,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5666 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=7159, Invalid=19247, Unknown=0, NotChecked=0, Total=26406 [2020-10-24 02:32:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-24 02:32:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 545. [2020-10-24 02:32:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-10-24 02:32:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 548 transitions. [2020-10-24 02:32:31,668 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 548 transitions. Word has length 533 [2020-10-24 02:32:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:31,668 INFO L481 AbstractCegarLoop]: Abstraction has 545 states and 548 transitions. [2020-10-24 02:32:31,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-24 02:32:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 548 transitions. [2020-10-24 02:32:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-24 02:32:31,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:31,672 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] [2020-10-24 02:32:31,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-24 02:32:31,672 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:31,672 INFO L82 PathProgramCache]: Analyzing trace with hash -843239114, now seen corresponding path program 62 times [2020-10-24 02:32:31,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:31,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373430378] [2020-10-24 02:32:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 02:32:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-24 02:32:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:32:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:32:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:32:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:32:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:32:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:32:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:32:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:32:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:32:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:32:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:32:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:32:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:32:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:32:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:32:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-24 02:32:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-24 02:32:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-24 02:32:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-24 02:32:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-24 02:32:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-24 02:32:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-24 02:32:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-24 02:32:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-24 02:32:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-24 02:32:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-10-24 02:32:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-24 02:32:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-24 02:32:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-24 02:32:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7814 backedges. 2914 proven. 3040 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-24 02:32:33,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373430378] [2020-10-24 02:32:33,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:33,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-24 02:32:33,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505956574] [2020-10-24 02:32:33,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-24 02:32:33,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:33,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-24 02:32:33,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=837, Unknown=0, NotChecked=0, Total=1406 [2020-10-24 02:32:33,530 INFO L87 Difference]: Start difference. First operand 545 states and 548 transitions. Second operand 38 states. [2020-10-24 02:32:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:38,153 INFO L93 Difference]: Finished difference Result 564 states and 567 transitions. [2020-10-24 02:32:38,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-24 02:32:38,154 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 539 [2020-10-24 02:32:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:38,157 INFO L225 Difference]: With dead ends: 564 [2020-10-24 02:32:38,158 INFO L226 Difference]: Without dead ends: 560 [2020-10-24 02:32:38,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1708, Invalid=3694, Unknown=0, NotChecked=0, Total=5402 [2020-10-24 02:32:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-24 02:32:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 555. [2020-10-24 02:32:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-10-24 02:32:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 558 transitions. [2020-10-24 02:32:38,288 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 558 transitions. Word has length 539 [2020-10-24 02:32:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:38,289 INFO L481 AbstractCegarLoop]: Abstraction has 555 states and 558 transitions. [2020-10-24 02:32:38,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-24 02:32:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 558 transitions. [2020-10-24 02:32:38,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-24 02:32:38,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:38,292 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] [2020-10-24 02:32:38,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-24 02:32:38,292 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:38,293 INFO L82 PathProgramCache]: Analyzing trace with hash 449191585, now seen corresponding path program 63 times [2020-10-24 02:32:38,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:38,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228074446] [2020-10-24 02:32:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-24 02:32:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-24 02:32:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-24 02:32:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:32:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:32:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:32:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:32:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:32:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:32:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:32:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:32:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:32:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:32:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:32:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:32:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:32:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:32:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-24 02:32:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-24 02:32:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-24 02:32:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-24 02:32:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-24 02:32:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-24 02:32:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-24 02:32:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-24 02:32:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-24 02:32:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-24 02:32:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-10-24 02:32:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-24 02:32:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-24 02:32:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-24 02:32:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-24 02:32:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 2949 proven. 3195 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-10-24 02:32:42,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228074446] [2020-10-24 02:32:42,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:42,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-24 02:32:42,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83489286] [2020-10-24 02:32:42,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-24 02:32:42,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:42,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-24 02:32:42,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=3668, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 02:32:42,378 INFO L87 Difference]: Start difference. First operand 555 states and 558 transitions. Second operand 70 states. [2020-10-24 02:32:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:58,069 INFO L93 Difference]: Finished difference Result 1037 states and 1139 transitions. [2020-10-24 02:32:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-24 02:32:58,070 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 549 [2020-10-24 02:32:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:58,075 INFO L225 Difference]: With dead ends: 1037 [2020-10-24 02:32:58,075 INFO L226 Difference]: Without dead ends: 828 [2020-10-24 02:32:58,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6025 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=7613, Invalid=20443, Unknown=0, NotChecked=0, Total=28056 [2020-10-24 02:32:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-24 02:32:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 561. [2020-10-24 02:32:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-24 02:32:58,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 564 transitions. [2020-10-24 02:32:58,207 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 564 transitions. Word has length 549 [2020-10-24 02:32:58,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:58,208 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 564 transitions. [2020-10-24 02:32:58,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-24 02:32:58,208 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 564 transitions. [2020-10-24 02:32:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-24 02:32:58,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:58,211 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] [2020-10-24 02:32:58,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-24 02:32:58,211 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1029513513, now seen corresponding path program 64 times [2020-10-24 02:32:58,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:58,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25017076] [2020-10-24 02:32:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:32:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:32:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-24 02:32:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:32:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:32:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:32:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:32:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:32:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:32:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:32:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:32:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:32:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:32:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:32:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:32:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:32:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:32:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-24 02:32:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-24 02:32:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:32:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-24 02:32:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-10-24 02:32:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-24 02:32:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-24 02:32:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-24 02:32:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-10-24 02:32:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-10-24 02:32:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-24 02:32:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-10-24 02:32:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-10-24 02:32:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-10-24 02:32:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:59,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-24 02:32:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8322 backedges. 3104 proven. 3234 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-10-24 02:33:00,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25017076] [2020-10-24 02:33:00,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:33:00,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-24 02:33:00,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306308518] [2020-10-24 02:33:00,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-24 02:33:00,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:33:00,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-24 02:33:00,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=879, Unknown=0, NotChecked=0, Total=1482 [2020-10-24 02:33:00,218 INFO L87 Difference]: Start difference. First operand 561 states and 564 transitions. Second operand 39 states. [2020-10-24 02:33:05,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:33:05,448 INFO L93 Difference]: Finished difference Result 580 states and 583 transitions. [2020-10-24 02:33:05,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-24 02:33:05,449 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 555 [2020-10-24 02:33:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:33:05,452 INFO L225 Difference]: With dead ends: 580 [2020-10-24 02:33:05,452 INFO L226 Difference]: Without dead ends: 576 [2020-10-24 02:33:05,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1810, Invalid=3890, Unknown=0, NotChecked=0, Total=5700 [2020-10-24 02:33:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-24 02:33:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 571. [2020-10-24 02:33:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-24 02:33:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 574 transitions. [2020-10-24 02:33:05,591 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 574 transitions. Word has length 555 [2020-10-24 02:33:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:33:05,591 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 574 transitions. [2020-10-24 02:33:05,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-24 02:33:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 574 transitions. [2020-10-24 02:33:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-10-24 02:33:05,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:33:05,594 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] [2020-10-24 02:33:05,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-24 02:33:05,594 INFO L429 AbstractCegarLoop]: === Iteration 68 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:33:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:33:05,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1482884396, now seen corresponding path program 65 times [2020-10-24 02:33:05,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:33:05,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895284705] [2020-10-24 02:33:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:33:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:33:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-24 02:33:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:33:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-24 02:33:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:33:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:33:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:33:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:33:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:33:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:33:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:33:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:33:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:33:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:33:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:33:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:33:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:33:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:33:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-24 02:33:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-24 02:33:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:33:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-24 02:33:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-10-24 02:33:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-24 02:33:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-24 02:33:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-24 02:33:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-10-24 02:33:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-10-24 02:33:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-24 02:33:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-10-24 02:33:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-10-24 02:33:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-10-24 02:33:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-24 02:33:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-24 02:33:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 3140 proven. 3394 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-24 02:33:10,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895284705] [2020-10-24 02:33:10,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:33:10,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-24 02:33:10,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572803889] [2020-10-24 02:33:10,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-24 02:33:10,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:33:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-24 02:33:10,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1231, Invalid=3881, Unknown=0, NotChecked=0, Total=5112 [2020-10-24 02:33:10,110 INFO L87 Difference]: Start difference. First operand 571 states and 574 transitions. Second operand 72 states. [2020-10-24 02:33:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:33:27,360 INFO L93 Difference]: Finished difference Result 1067 states and 1172 transitions. [2020-10-24 02:33:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-10-24 02:33:27,362 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 565 [2020-10-24 02:33:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:33:27,369 INFO L225 Difference]: With dead ends: 1067 [2020-10-24 02:33:27,369 INFO L226 Difference]: Without dead ends: 852 [2020-10-24 02:33:27,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6395 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=8081, Invalid=21675, Unknown=0, NotChecked=0, Total=29756 [2020-10-24 02:33:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-24 02:33:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 577. [2020-10-24 02:33:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-24 02:33:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 580 transitions. [2020-10-24 02:33:27,536 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 580 transitions. Word has length 565 [2020-10-24 02:33:27,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:33:27,536 INFO L481 AbstractCegarLoop]: Abstraction has 577 states and 580 transitions. [2020-10-24 02:33:27,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-24 02:33:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 580 transitions. [2020-10-24 02:33:27,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-24 02:33:27,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:33:27,539 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] [2020-10-24 02:33:27,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-24 02:33:27,540 INFO L429 AbstractCegarLoop]: === Iteration 69 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:33:27,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:33:27,540 INFO L82 PathProgramCache]: Analyzing trace with hash -366088868, now seen corresponding path program 66 times [2020-10-24 02:33:27,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:33:27,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825300334] [2020-10-24 02:33:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:33:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:33:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:33:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:33:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-24 02:33:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:33:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:33:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:33:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:33:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:33:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:33:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:33:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-24 02:33:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-24 02:33:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-24 02:33:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:33:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-24 02:33:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-24 02:33:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-10-24 02:33:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-24 02:33:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-10-24 02:33:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-24 02:33:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-10-24 02:33:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-24 02:33:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:33:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-24 02:33:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-24 02:33:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-10-24 02:33:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-10-24 02:33:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-10-24 02:33:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-10-24 02:33:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-10-24 02:33:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-24 02:33:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-10-24 02:33:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-24 02:33:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8846 backedges. 3300 proven. 3434 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-24 02:33:29,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825300334] [2020-10-24 02:33:29,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:33:29,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-24 02:33:29,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631064063] [2020-10-24 02:33:29,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-24 02:33:29,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:33:29,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-24 02:33:29,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=922, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 02:33:29,560 INFO L87 Difference]: Start difference. First operand 577 states and 580 transitions. Second operand 40 states. [2020-10-24 02:33:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:33:34,906 INFO L93 Difference]: Finished difference Result 596 states and 599 transitions. [2020-10-24 02:33:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-24 02:33:34,908 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 571 [2020-10-24 02:33:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:33:34,911 INFO L225 Difference]: With dead ends: 596 [2020-10-24 02:33:34,911 INFO L226 Difference]: Without dead ends: 592 [2020-10-24 02:33:34,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1915, Invalid=4091, Unknown=0, NotChecked=0, Total=6006 [2020-10-24 02:33:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-10-24 02:33:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 587. [2020-10-24 02:33:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-24 02:33:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 590 transitions. [2020-10-24 02:33:35,065 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 590 transitions. Word has length 571 [2020-10-24 02:33:35,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:33:35,065 INFO L481 AbstractCegarLoop]: Abstraction has 587 states and 590 transitions. [2020-10-24 02:33:35,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-24 02:33:35,065 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 590 transitions. [2020-10-24 02:33:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-24 02:33:35,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:33:35,070 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] [2020-10-24 02:33:35,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-24 02:33:35,070 INFO L429 AbstractCegarLoop]: === Iteration 70 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:33:35,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:33:35,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2020500295, now seen corresponding path program 67 times [2020-10-24 02:33:35,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:33:35,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680703541] [2020-10-24 02:33:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:33:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:33:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-24 02:33:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-24 02:33:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-24 02:33:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:33:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:33:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:33:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:33:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:33:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:33:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:33:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-24 02:33:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-24 02:33:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-24 02:33:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:33:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-24 02:33:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-24 02:33:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-10-24 02:33:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-24 02:33:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-10-24 02:33:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-24 02:33:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-10-24 02:33:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-24 02:33:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:33:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-24 02:33:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-24 02:33:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-10-24 02:33:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-10-24 02:33:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-10-24 02:33:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-10-24 02:33:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-10-24 02:33:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-24 02:33:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-10-24 02:33:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-24 02:33:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:39,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-24 02:33:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 3337 proven. 3599 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-10-24 02:33:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680703541] [2020-10-24 02:33:40,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:33:40,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-24 02:33:40,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718937991] [2020-10-24 02:33:40,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-24 02:33:40,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:33:40,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-24 02:33:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1302, Invalid=4100, Unknown=0, NotChecked=0, Total=5402 [2020-10-24 02:33:40,104 INFO L87 Difference]: Start difference. First operand 587 states and 590 transitions. Second operand 74 states. [2020-10-24 02:33:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:33:59,219 INFO L93 Difference]: Finished difference Result 1097 states and 1205 transitions. [2020-10-24 02:33:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-10-24 02:33:59,225 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 581 [2020-10-24 02:33:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:33:59,230 INFO L225 Difference]: With dead ends: 1097 [2020-10-24 02:33:59,230 INFO L226 Difference]: Without dead ends: 876 [2020-10-24 02:33:59,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6776 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=8563, Invalid=22943, Unknown=0, NotChecked=0, Total=31506 [2020-10-24 02:33:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-24 02:33:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 593. [2020-10-24 02:33:59,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-24 02:33:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 596 transitions. [2020-10-24 02:33:59,426 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 596 transitions. Word has length 581 [2020-10-24 02:33:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:33:59,427 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 596 transitions. [2020-10-24 02:33:59,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-24 02:33:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 596 transitions. [2020-10-24 02:33:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-24 02:33:59,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:33:59,430 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] [2020-10-24 02:33:59,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-24 02:33:59,430 INFO L429 AbstractCegarLoop]: === Iteration 71 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:33:59,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:33:59,430 INFO L82 PathProgramCache]: Analyzing trace with hash 152651215, now seen corresponding path program 68 times [2020-10-24 02:33:59,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:33:59,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292774458] [2020-10-24 02:33:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:33:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:34:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:34:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:34:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:34:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:34:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:34:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:34:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:34:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:34:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:34:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:34:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:34:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-24 02:34:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-24 02:34:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-24 02:34:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-24 02:34:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-24 02:34:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:34:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-24 02:34:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-24 02:34:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-24 02:34:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-24 02:34:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-10-24 02:34:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-10-24 02:34:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-24 02:34:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-24 02:34:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-24 02:34:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-24 02:34:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-10-24 02:34:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-24 02:34:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-24 02:34:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-24 02:34:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-10-24 02:34:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-10-24 02:34:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-10-24 02:34:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9386 backedges. 3502 proven. 3640 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-10-24 02:34:01,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292774458] [2020-10-24 02:34:01,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:34:01,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-24 02:34:01,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620696366] [2020-10-24 02:34:01,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-24 02:34:01,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:34:01,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-24 02:34:01,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=966, Unknown=0, NotChecked=0, Total=1640 [2020-10-24 02:34:01,588 INFO L87 Difference]: Start difference. First operand 593 states and 596 transitions. Second operand 41 states. [2020-10-24 02:34:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:34:07,278 INFO L93 Difference]: Finished difference Result 612 states and 615 transitions. [2020-10-24 02:34:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-24 02:34:07,280 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 587 [2020-10-24 02:34:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:34:07,283 INFO L225 Difference]: With dead ends: 612 [2020-10-24 02:34:07,283 INFO L226 Difference]: Without dead ends: 608 [2020-10-24 02:34:07,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2023, Invalid=4297, Unknown=0, NotChecked=0, Total=6320 [2020-10-24 02:34:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-24 02:34:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 603. [2020-10-24 02:34:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-24 02:34:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 606 transitions. [2020-10-24 02:34:07,442 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 606 transitions. Word has length 587 [2020-10-24 02:34:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:34:07,443 INFO L481 AbstractCegarLoop]: Abstraction has 603 states and 606 transitions. [2020-10-24 02:34:07,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-24 02:34:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 606 transitions. [2020-10-24 02:34:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2020-10-24 02:34:07,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:34:07,446 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] [2020-10-24 02:34:07,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-24 02:34:07,446 INFO L429 AbstractCegarLoop]: === Iteration 72 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:34:07,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:34:07,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1379399686, now seen corresponding path program 69 times [2020-10-24 02:34:07,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:34:07,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458015354] [2020-10-24 02:34:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:34:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:34:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-24 02:34:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-24 02:34:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-24 02:34:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:34:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:34:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:34:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:34:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:34:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:34:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:34:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:34:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-24 02:34:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-24 02:34:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-24 02:34:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-24 02:34:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-24 02:34:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:34:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-24 02:34:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-24 02:34:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-24 02:34:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-24 02:34:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-10-24 02:34:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-10-24 02:34:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-24 02:34:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-24 02:34:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-24 02:34:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-24 02:34:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-10-24 02:34:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-24 02:34:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-24 02:34:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-24 02:34:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-10-24 02:34:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-10-24 02:34:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-10-24 02:34:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:12,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-10-24 02:34:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:13,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 3540 proven. 3810 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-24 02:34:13,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458015354] [2020-10-24 02:34:13,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:34:13,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-24 02:34:13,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114065383] [2020-10-24 02:34:13,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-24 02:34:13,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:34:13,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-24 02:34:13,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1375, Invalid=4325, Unknown=0, NotChecked=0, Total=5700 [2020-10-24 02:34:13,050 INFO L87 Difference]: Start difference. First operand 603 states and 606 transitions. Second operand 76 states. [2020-10-24 02:34:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:34:33,810 INFO L93 Difference]: Finished difference Result 1127 states and 1238 transitions. [2020-10-24 02:34:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2020-10-24 02:34:33,812 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 597 [2020-10-24 02:34:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:34:33,818 INFO L225 Difference]: With dead ends: 1127 [2020-10-24 02:34:33,818 INFO L226 Difference]: Without dead ends: 900 [2020-10-24 02:34:33,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7168 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=9059, Invalid=24247, Unknown=0, NotChecked=0, Total=33306 [2020-10-24 02:34:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-10-24 02:34:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 609. [2020-10-24 02:34:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-10-24 02:34:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 612 transitions. [2020-10-24 02:34:33,978 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 612 transitions. Word has length 597 [2020-10-24 02:34:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:34:33,978 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 612 transitions. [2020-10-24 02:34:33,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-24 02:34:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 612 transitions. [2020-10-24 02:34:33,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-24 02:34:33,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:34:33,983 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] [2020-10-24 02:34:33,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-24 02:34:33,984 INFO L429 AbstractCegarLoop]: === Iteration 73 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:34:33,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:34:33,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2058148482, now seen corresponding path program 70 times [2020-10-24 02:34:33,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:34:33,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99885467] [2020-10-24 02:34:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:34:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:34:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:34:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:34:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:34:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:34:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:34:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:34:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:34:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:34:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:34:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:34:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:34:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:34:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-24 02:34:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-24 02:34:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-24 02:34:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-24 02:34:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-24 02:34:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-24 02:34:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-24 02:34:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:34:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-24 02:34:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-24 02:34:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-24 02:34:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-24 02:34:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-24 02:34:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-10-24 02:34:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-10-24 02:34:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-24 02:34:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-24 02:34:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-24 02:34:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-10-24 02:34:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-10-24 02:34:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-24 02:34:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-10-24 02:34:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-10-24 02:34:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9942 backedges. 3710 proven. 3852 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-24 02:34:36,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99885467] [2020-10-24 02:34:36,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:34:36,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-24 02:34:36,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905552126] [2020-10-24 02:34:36,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-24 02:34:36,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:34:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-24 02:34:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=1011, Unknown=0, NotChecked=0, Total=1722 [2020-10-24 02:34:36,495 INFO L87 Difference]: Start difference. First operand 609 states and 612 transitions. Second operand 42 states. [2020-10-24 02:34:42,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:34:42,907 INFO L93 Difference]: Finished difference Result 628 states and 631 transitions. [2020-10-24 02:34:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-24 02:34:42,909 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 603 [2020-10-24 02:34:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:34:42,912 INFO L225 Difference]: With dead ends: 628 [2020-10-24 02:34:42,913 INFO L226 Difference]: Without dead ends: 624 [2020-10-24 02:34:42,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2134, Invalid=4508, Unknown=0, NotChecked=0, Total=6642 [2020-10-24 02:34:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-10-24 02:34:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 619. [2020-10-24 02:34:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-24 02:34:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 622 transitions. [2020-10-24 02:34:43,068 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 622 transitions. Word has length 603 [2020-10-24 02:34:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:34:43,068 INFO L481 AbstractCegarLoop]: Abstraction has 619 states and 622 transitions. [2020-10-24 02:34:43,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-24 02:34:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 622 transitions. [2020-10-24 02:34:43,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-10-24 02:34:43,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:34:43,072 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] [2020-10-24 02:34:43,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-24 02:34:43,072 INFO L429 AbstractCegarLoop]: === Iteration 74 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:34:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:34:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash -690251539, now seen corresponding path program 71 times [2020-10-24 02:34:43,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:34:43,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878606199] [2020-10-24 02:34:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:34:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:34:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-24 02:34:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:34:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-24 02:34:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:34:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:34:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:34:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:34:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:34:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:34:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:34:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:34:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:34:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-24 02:34:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-24 02:34:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-24 02:34:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-24 02:34:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-24 02:34:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-24 02:34:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-24 02:34:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:34:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-24 02:34:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-24 02:34:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-24 02:34:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-24 02:34:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-24 02:34:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-10-24 02:34:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-10-24 02:34:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-24 02:34:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-24 02:34:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-24 02:34:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-10-24 02:34:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-10-24 02:34:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-24 02:34:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-10-24 02:34:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-10-24 02:34:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-24 02:34:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 3749 proven. 4027 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-10-24 02:34:49,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878606199] [2020-10-24 02:34:49,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:34:49,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-24 02:34:49,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308358322] [2020-10-24 02:34:49,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-24 02:34:49,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:34:49,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-24 02:34:49,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1450, Invalid=4556, Unknown=0, NotChecked=0, Total=6006 [2020-10-24 02:34:49,308 INFO L87 Difference]: Start difference. First operand 619 states and 622 transitions. Second operand 78 states. [2020-10-24 02:35:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:35:12,380 INFO L93 Difference]: Finished difference Result 1157 states and 1271 transitions. [2020-10-24 02:35:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-10-24 02:35:12,382 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 613 [2020-10-24 02:35:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:35:12,387 INFO L225 Difference]: With dead ends: 1157 [2020-10-24 02:35:12,388 INFO L226 Difference]: Without dead ends: 924 [2020-10-24 02:35:12,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=9569, Invalid=25587, Unknown=0, NotChecked=0, Total=35156 [2020-10-24 02:35:12,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-10-24 02:35:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 625. [2020-10-24 02:35:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-24 02:35:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 628 transitions. [2020-10-24 02:35:12,576 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 628 transitions. Word has length 613 [2020-10-24 02:35:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:35:12,577 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 628 transitions. [2020-10-24 02:35:12,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-24 02:35:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 628 transitions. [2020-10-24 02:35:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-24 02:35:12,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:35:12,580 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] [2020-10-24 02:35:12,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-24 02:35:12,580 INFO L429 AbstractCegarLoop]: === Iteration 75 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:35:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:35:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1910875275, now seen corresponding path program 72 times [2020-10-24 02:35:12,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:35:12,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162677546] [2020-10-24 02:35:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:35:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:35:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:35:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:35:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:35:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:35:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:35:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:35:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:35:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:35:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:35:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:35:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:35:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:35:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:35:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:35:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-24 02:35:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-24 02:35:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-24 02:35:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-24 02:35:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-24 02:35:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-24 02:35:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-24 02:35:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-24 02:35:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-24 02:35:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-24 02:35:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-10-24 02:35:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-24 02:35:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-24 02:35:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-24 02:35:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-24 02:35:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-24 02:35:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-10-24 02:35:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2020-10-24 02:35:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:15,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-24 02:35:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-24 02:35:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2020-10-24 02:35:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-10-24 02:35:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10514 backedges. 3924 proven. 4070 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-10-24 02:35:15,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162677546] [2020-10-24 02:35:15,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:35:15,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-24 02:35:15,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516713493] [2020-10-24 02:35:15,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-24 02:35:15,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:35:15,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-24 02:35:15,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=1057, Unknown=0, NotChecked=0, Total=1806 [2020-10-24 02:35:15,277 INFO L87 Difference]: Start difference. First operand 625 states and 628 transitions. Second operand 43 states. [2020-10-24 02:35:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:35:22,021 INFO L93 Difference]: Finished difference Result 644 states and 647 transitions. [2020-10-24 02:35:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-24 02:35:22,023 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 619 [2020-10-24 02:35:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:35:22,027 INFO L225 Difference]: With dead ends: 644 [2020-10-24 02:35:22,028 INFO L226 Difference]: Without dead ends: 640 [2020-10-24 02:35:22,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2248, Invalid=4724, Unknown=0, NotChecked=0, Total=6972 [2020-10-24 02:35:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-24 02:35:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 635. [2020-10-24 02:35:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-10-24 02:35:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 638 transitions. [2020-10-24 02:35:22,208 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 638 transitions. Word has length 619 [2020-10-24 02:35:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:35:22,209 INFO L481 AbstractCegarLoop]: Abstraction has 635 states and 638 transitions. [2020-10-24 02:35:22,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-24 02:35:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 638 transitions. [2020-10-24 02:35:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2020-10-24 02:35:22,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:35:22,212 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] [2020-10-24 02:35:22,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-24 02:35:22,212 INFO L429 AbstractCegarLoop]: === Iteration 76 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:35:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:35:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash -193018336, now seen corresponding path program 73 times [2020-10-24 02:35:22,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:35:22,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956430909] [2020-10-24 02:35:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:35:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:35:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-24 02:35:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-24 02:35:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-24 02:35:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:35:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:35:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:35:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:35:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:35:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:35:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:35:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:35:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:35:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:35:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:35:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-24 02:35:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-24 02:35:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-24 02:35:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-24 02:35:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-24 02:35:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-24 02:35:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-24 02:35:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-24 02:35:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-24 02:35:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-24 02:35:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-10-24 02:35:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-24 02:35:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-24 02:35:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-24 02:35:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-24 02:35:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-24 02:35:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-10-24 02:35:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2020-10-24 02:35:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-24 02:35:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-24 02:35:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2020-10-24 02:35:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-10-24 02:35:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-24 02:35:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 3964 proven. 4250 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-24 02:35:29,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956430909] [2020-10-24 02:35:29,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:35:29,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-24 02:35:29,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699422856] [2020-10-24 02:35:29,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-24 02:35:29,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:35:29,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-24 02:35:29,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1527, Invalid=4793, Unknown=0, NotChecked=0, Total=6320 [2020-10-24 02:35:29,236 INFO L87 Difference]: Start difference. First operand 635 states and 638 transitions. Second operand 80 states. [2020-10-24 02:35:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:35:54,136 INFO L93 Difference]: Finished difference Result 1187 states and 1304 transitions. [2020-10-24 02:35:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2020-10-24 02:35:54,138 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 629 [2020-10-24 02:35:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:35:54,143 INFO L225 Difference]: With dead ends: 1187 [2020-10-24 02:35:54,143 INFO L226 Difference]: Without dead ends: 948 [2020-10-24 02:35:54,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7985 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=10093, Invalid=26963, Unknown=0, NotChecked=0, Total=37056 [2020-10-24 02:35:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2020-10-24 02:35:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 641. [2020-10-24 02:35:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-24 02:35:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 644 transitions. [2020-10-24 02:35:54,483 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 644 transitions. Word has length 629 [2020-10-24 02:35:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:35:54,483 INFO L481 AbstractCegarLoop]: Abstraction has 641 states and 644 transitions. [2020-10-24 02:35:54,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-24 02:35:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 644 transitions. [2020-10-24 02:35:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-10-24 02:35:54,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:35:54,489 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] [2020-10-24 02:35:54,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-24 02:35:54,490 INFO L429 AbstractCegarLoop]: === Iteration 77 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:35:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:35:54,490 INFO L82 PathProgramCache]: Analyzing trace with hash 70744232, now seen corresponding path program 74 times [2020-10-24 02:35:54,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:35:54,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070523480] [2020-10-24 02:35:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:35:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:35:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:35:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:35:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:35:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:35:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:35:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:35:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:35:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:35:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:35:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:35:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:35:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:35:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:35:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:35:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-24 02:35:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-24 02:35:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:35:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-24 02:35:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-10-24 02:35:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-24 02:35:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-24 02:35:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-24 02:35:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-10-24 02:35:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-10-24 02:35:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-24 02:35:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-10-24 02:35:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-10-24 02:35:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-10-24 02:35:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-24 02:35:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-24 02:35:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-24 02:35:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-10-24 02:35:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-24 02:35:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-10-24 02:35:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-24 02:35:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-10-24 02:35:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-24 02:35:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 4144 proven. 4294 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-24 02:35:57,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070523480] [2020-10-24 02:35:57,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:35:57,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-24 02:35:57,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260035773] [2020-10-24 02:35:57,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-24 02:35:57,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:35:57,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-24 02:35:57,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=1104, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 02:35:57,521 INFO L87 Difference]: Start difference. First operand 641 states and 644 transitions. Second operand 44 states. [2020-10-24 02:36:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:36:05,231 INFO L93 Difference]: Finished difference Result 660 states and 663 transitions. [2020-10-24 02:36:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-24 02:36:05,234 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 635 [2020-10-24 02:36:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:36:05,238 INFO L225 Difference]: With dead ends: 660 [2020-10-24 02:36:05,238 INFO L226 Difference]: Without dead ends: 656 [2020-10-24 02:36:05,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2365, Invalid=4945, Unknown=0, NotChecked=0, Total=7310 [2020-10-24 02:36:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-24 02:36:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 651. [2020-10-24 02:36:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-24 02:36:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 654 transitions. [2020-10-24 02:36:05,474 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 654 transitions. Word has length 635 [2020-10-24 02:36:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:36:05,475 INFO L481 AbstractCegarLoop]: Abstraction has 651 states and 654 transitions. [2020-10-24 02:36:05,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-24 02:36:05,475 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 654 transitions. [2020-10-24 02:36:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2020-10-24 02:36:05,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:36:05,478 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] [2020-10-24 02:36:05,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-24 02:36:05,479 INFO L429 AbstractCegarLoop]: === Iteration 78 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:36:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:36:05,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1138016365, now seen corresponding path program 75 times [2020-10-24 02:36:05,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:36:05,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704658986] [2020-10-24 02:36:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:36:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:36:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-24 02:36:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-24 02:36:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-24 02:36:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:36:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:36:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:36:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:36:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:36:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:36:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:36:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:36:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:36:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:36:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:36:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-24 02:36:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-24 02:36:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:36:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-24 02:36:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-10-24 02:36:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-24 02:36:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-24 02:36:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-24 02:36:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-10-24 02:36:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-10-24 02:36:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-24 02:36:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-10-24 02:36:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-10-24 02:36:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-10-24 02:36:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-24 02:36:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-24 02:36:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-24 02:36:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-10-24 02:36:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-24 02:36:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-10-24 02:36:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-24 02:36:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-10-24 02:36:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-24 02:36:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2020-10-24 02:36:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 4185 proven. 4479 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-10-24 02:36:13,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704658986] [2020-10-24 02:36:13,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:36:13,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-10-24 02:36:13,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928620217] [2020-10-24 02:36:13,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-24 02:36:13,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:36:13,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-24 02:36:13,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1606, Invalid=5036, Unknown=0, NotChecked=0, Total=6642 [2020-10-24 02:36:13,222 INFO L87 Difference]: Start difference. First operand 651 states and 654 transitions. Second operand 82 states. [2020-10-24 02:36:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:36:40,800 INFO L93 Difference]: Finished difference Result 1217 states and 1337 transitions. [2020-10-24 02:36:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2020-10-24 02:36:40,802 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 645 [2020-10-24 02:36:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:36:40,806 INFO L225 Difference]: With dead ends: 1217 [2020-10-24 02:36:40,806 INFO L226 Difference]: Without dead ends: 972 [2020-10-24 02:36:40,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8410 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=10631, Invalid=28375, Unknown=0, NotChecked=0, Total=39006 [2020-10-24 02:36:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-10-24 02:36:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 657. [2020-10-24 02:36:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-10-24 02:36:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 660 transitions. [2020-10-24 02:36:41,003 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 660 transitions. Word has length 645 [2020-10-24 02:36:41,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:36:41,003 INFO L481 AbstractCegarLoop]: Abstraction has 657 states and 660 transitions. [2020-10-24 02:36:41,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-24 02:36:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 660 transitions. [2020-10-24 02:36:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-24 02:36:41,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:36:41,007 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] [2020-10-24 02:36:41,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-24 02:36:41,007 INFO L429 AbstractCegarLoop]: === Iteration 79 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:36:41,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:36:41,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1383981595, now seen corresponding path program 76 times [2020-10-24 02:36:41,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:36:41,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968147512] [2020-10-24 02:36:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:36:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:36:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:36:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:36:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:36:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:36:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:36:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:36:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:36:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-24 02:36:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-24 02:36:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-24 02:36:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:36:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-24 02:36:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-24 02:36:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-10-24 02:36:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-24 02:36:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-10-24 02:36:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-24 02:36:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-10-24 02:36:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-24 02:36:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:36:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-24 02:36:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-24 02:36:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-10-24 02:36:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-10-24 02:36:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-10-24 02:36:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-10-24 02:36:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-10-24 02:36:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-24 02:36:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-10-24 02:36:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-24 02:36:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-24 02:36:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-24 02:36:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2020-10-24 02:36:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-10-24 02:36:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2020-10-24 02:36:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2020-10-24 02:36:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2020-10-24 02:36:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:43,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-24 02:36:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11706 backedges. 4370 proven. 4524 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-10-24 02:36:44,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968147512] [2020-10-24 02:36:44,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:36:44,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-24 02:36:44,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387501351] [2020-10-24 02:36:44,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-24 02:36:44,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:36:44,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-24 02:36:44,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=1152, Unknown=0, NotChecked=0, Total=1980 [2020-10-24 02:36:44,264 INFO L87 Difference]: Start difference. First operand 657 states and 660 transitions. Second operand 45 states. [2020-10-24 02:36:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:36:52,537 INFO L93 Difference]: Finished difference Result 676 states and 679 transitions. [2020-10-24 02:36:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-24 02:36:52,540 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 651 [2020-10-24 02:36:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:36:52,543 INFO L225 Difference]: With dead ends: 676 [2020-10-24 02:36:52,544 INFO L226 Difference]: Without dead ends: 672 [2020-10-24 02:36:52,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2485, Invalid=5171, Unknown=0, NotChecked=0, Total=7656 [2020-10-24 02:36:52,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-10-24 02:36:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 667. [2020-10-24 02:36:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-10-24 02:36:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 670 transitions. [2020-10-24 02:36:52,734 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 670 transitions. Word has length 651 [2020-10-24 02:36:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:36:52,735 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 670 transitions. [2020-10-24 02:36:52,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-24 02:36:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 670 transitions. [2020-10-24 02:36:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-24 02:36:52,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:36:52,740 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] [2020-10-24 02:36:52,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-24 02:36:52,740 INFO L429 AbstractCegarLoop]: === Iteration 80 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:36:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:36:52,741 INFO L82 PathProgramCache]: Analyzing trace with hash 452900166, now seen corresponding path program 77 times [2020-10-24 02:36:52,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:36:52,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646886593] [2020-10-24 02:36:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:36:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:37:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-24 02:37:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:37:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-24 02:37:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-24 02:37:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-24 02:37:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-24 02:37:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-24 02:37:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-24 02:37:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-24 02:37:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-24 02:37:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:37:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-24 02:37:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-24 02:37:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-10-24 02:37:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-24 02:37:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-10-24 02:37:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-24 02:37:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-10-24 02:37:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-24 02:37:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:37:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-24 02:37:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-24 02:37:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-10-24 02:37:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-10-24 02:37:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-10-24 02:37:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-10-24 02:37:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-10-24 02:37:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-24 02:37:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-10-24 02:37:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-24 02:37:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-24 02:37:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-24 02:37:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2020-10-24 02:37:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-10-24 02:37:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2020-10-24 02:37:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2020-10-24 02:37:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2020-10-24 02:37:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-24 02:37:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:00,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 645 [2020-10-24 02:37:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 4412 proven. 4714 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-24 02:37:01,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646886593] [2020-10-24 02:37:01,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:37:01,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-24 02:37:01,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842940643] [2020-10-24 02:37:01,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-24 02:37:01,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:37:01,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-24 02:37:01,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1687, Invalid=5285, Unknown=0, NotChecked=0, Total=6972 [2020-10-24 02:37:01,205 INFO L87 Difference]: Start difference. First operand 667 states and 670 transitions. Second operand 84 states. [2020-10-24 02:37:12,461 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-24 02:37:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:37:31,566 INFO L93 Difference]: Finished difference Result 1247 states and 1370 transitions. [2020-10-24 02:37:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2020-10-24 02:37:31,569 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 661 [2020-10-24 02:37:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:37:31,573 INFO L225 Difference]: With dead ends: 1247 [2020-10-24 02:37:31,573 INFO L226 Difference]: Without dead ends: 996 [2020-10-24 02:37:31,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8846 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=11183, Invalid=29823, Unknown=0, NotChecked=0, Total=41006 [2020-10-24 02:37:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-10-24 02:37:31,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 673. [2020-10-24 02:37:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-24 02:37:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 676 transitions. [2020-10-24 02:37:31,780 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 676 transitions. Word has length 661 [2020-10-24 02:37:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:37:31,780 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 676 transitions. [2020-10-24 02:37:31,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-24 02:37:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 676 transitions. [2020-10-24 02:37:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-10-24 02:37:31,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:37:31,785 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] [2020-10-24 02:37:31,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-24 02:37:31,785 INFO L429 AbstractCegarLoop]: === Iteration 81 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:37:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:37:31,785 INFO L82 PathProgramCache]: Analyzing trace with hash 638273486, now seen corresponding path program 78 times [2020-10-24 02:37:31,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:37:31,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535738954] [2020-10-24 02:37:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:37:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:37:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:37:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:37:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:37:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:37:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:37:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:37:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:37:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:37:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-24 02:37:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-24 02:37:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-24 02:37:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-24 02:37:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-24 02:37:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:37:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-24 02:37:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-24 02:37:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-24 02:37:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-24 02:37:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-10-24 02:37:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-10-24 02:37:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-24 02:37:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-24 02:37:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-24 02:37:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-24 02:37:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-10-24 02:37:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-24 02:37:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-24 02:37:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-24 02:37:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-10-24 02:37:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-10-24 02:37:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-10-24 02:37:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-10-24 02:37:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2020-10-24 02:37:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-24 02:37:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-24 02:37:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2020-10-24 02:37:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-24 02:37:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2020-10-24 02:37:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2020-10-24 02:37:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12326 backedges. 4602 proven. 4760 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-24 02:37:35,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535738954] [2020-10-24 02:37:35,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:37:35,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-24 02:37:35,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817263953] [2020-10-24 02:37:35,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-24 02:37:35,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:37:35,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-24 02:37:35,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=1201, Unknown=0, NotChecked=0, Total=2070 [2020-10-24 02:37:35,540 INFO L87 Difference]: Start difference. First operand 673 states and 676 transitions. Second operand 46 states. [2020-10-24 02:37:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:37:44,926 INFO L93 Difference]: Finished difference Result 692 states and 695 transitions. [2020-10-24 02:37:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-24 02:37:44,928 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 667 [2020-10-24 02:37:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:37:44,931 INFO L225 Difference]: With dead ends: 692 [2020-10-24 02:37:44,931 INFO L226 Difference]: Without dead ends: 688 [2020-10-24 02:37:44,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2608, Invalid=5402, Unknown=0, NotChecked=0, Total=8010 [2020-10-24 02:37:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-10-24 02:37:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 683. [2020-10-24 02:37:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-24 02:37:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 686 transitions. [2020-10-24 02:37:45,114 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 686 transitions. Word has length 667 [2020-10-24 02:37:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:37:45,114 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 686 transitions. [2020-10-24 02:37:45,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-24 02:37:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 686 transitions. [2020-10-24 02:37:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-24 02:37:45,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:37:45,118 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] [2020-10-24 02:37:45,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-24 02:37:45,118 INFO L429 AbstractCegarLoop]: === Iteration 82 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:37:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:37:45,119 INFO L82 PathProgramCache]: Analyzing trace with hash -121972935, now seen corresponding path program 79 times [2020-10-24 02:37:45,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:37:45,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340379301] [2020-10-24 02:37:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:37:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:37:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-24 02:37:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-24 02:37:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-24 02:37:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-24 02:37:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:37:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-24 02:37:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-24 02:37:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-24 02:37:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-24 02:37:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-24 02:37:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-24 02:37:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-24 02:37:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-24 02:37:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:37:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-24 02:37:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-24 02:37:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-24 02:37:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-24 02:37:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-10-24 02:37:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-10-24 02:37:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-24 02:37:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-24 02:37:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-24 02:37:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-24 02:37:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-10-24 02:37:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-24 02:37:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-24 02:37:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-24 02:37:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-10-24 02:37:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-10-24 02:37:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-10-24 02:37:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-10-24 02:37:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2020-10-24 02:37:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-24 02:37:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-24 02:37:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2020-10-24 02:37:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-24 02:37:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2020-10-24 02:37:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2020-10-24 02:37:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-24 02:37:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 4645 proven. 4955 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-10-24 02:37:54,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340379301] [2020-10-24 02:37:54,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:37:54,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-24 02:37:54,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671068262] [2020-10-24 02:37:54,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-24 02:37:54,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:37:54,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-24 02:37:54,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=5540, Unknown=0, NotChecked=0, Total=7310 [2020-10-24 02:37:54,500 INFO L87 Difference]: Start difference. First operand 683 states and 686 transitions. Second operand 86 states. [2020-10-24 02:38:06,541 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-24 02:38:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:38:24,586 INFO L93 Difference]: Finished difference Result 1277 states and 1403 transitions. [2020-10-24 02:38:24,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2020-10-24 02:38:24,588 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 677 [2020-10-24 02:38:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:38:24,591 INFO L225 Difference]: With dead ends: 1277 [2020-10-24 02:38:24,591 INFO L226 Difference]: Without dead ends: 1020 [2020-10-24 02:38:24,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9293 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=11749, Invalid=31307, Unknown=0, NotChecked=0, Total=43056 [2020-10-24 02:38:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2020-10-24 02:38:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 689. [2020-10-24 02:38:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-24 02:38:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 692 transitions. [2020-10-24 02:38:24,781 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 692 transitions. Word has length 677 [2020-10-24 02:38:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:38:24,781 INFO L481 AbstractCegarLoop]: Abstraction has 689 states and 692 transitions. [2020-10-24 02:38:24,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-24 02:38:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 692 transitions. [2020-10-24 02:38:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-24 02:38:24,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:38:24,785 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] [2020-10-24 02:38:24,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-24 02:38:24,785 INFO L429 AbstractCegarLoop]: === Iteration 83 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:38:24,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:38:24,785 INFO L82 PathProgramCache]: Analyzing trace with hash 648108481, now seen corresponding path program 80 times [2020-10-24 02:38:24,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:38:24,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274913475] [2020-10-24 02:38:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:38:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:38:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:38:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:38:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:38:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:38:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:38:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:38:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:38:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:38:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:38:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-24 02:38:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-24 02:38:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-24 02:38:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-24 02:38:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-24 02:38:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-24 02:38:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-24 02:38:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:38:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-24 02:38:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-24 02:38:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-24 02:38:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-24 02:38:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-24 02:38:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-10-24 02:38:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-10-24 02:38:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-24 02:38:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-24 02:38:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-24 02:38:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-10-24 02:38:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-10-24 02:38:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-24 02:38:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-10-24 02:38:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-10-24 02:38:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-24 02:38:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-24 02:38:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-10-24 02:38:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2020-10-24 02:38:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-10-24 02:38:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-10-24 02:38:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-24 02:38:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:27,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-10-24 02:38:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12962 backedges. 4840 proven. 5002 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-10-24 02:38:28,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274913475] [2020-10-24 02:38:28,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:38:28,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-24 02:38:28,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258438660] [2020-10-24 02:38:28,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-24 02:38:28,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:38:28,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-24 02:38:28,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=1251, Unknown=0, NotChecked=0, Total=2162 [2020-10-24 02:38:28,189 INFO L87 Difference]: Start difference. First operand 689 states and 692 transitions. Second operand 47 states. [2020-10-24 02:38:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:38:35,850 INFO L93 Difference]: Finished difference Result 708 states and 711 transitions. [2020-10-24 02:38:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-24 02:38:35,852 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 683 [2020-10-24 02:38:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:38:35,854 INFO L225 Difference]: With dead ends: 708 [2020-10-24 02:38:35,854 INFO L226 Difference]: Without dead ends: 704 [2020-10-24 02:38:35,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2734, Invalid=5638, Unknown=0, NotChecked=0, Total=8372 [2020-10-24 02:38:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-10-24 02:38:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 699. [2020-10-24 02:38:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-10-24 02:38:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 702 transitions. [2020-10-24 02:38:36,055 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 702 transitions. Word has length 683 [2020-10-24 02:38:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:38:36,055 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 702 transitions. [2020-10-24 02:38:36,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-24 02:38:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 702 transitions. [2020-10-24 02:38:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2020-10-24 02:38:36,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:38:36,059 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] [2020-10-24 02:38:36,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-24 02:38:36,059 INFO L429 AbstractCegarLoop]: === Iteration 84 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:38:36,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:38:36,059 INFO L82 PathProgramCache]: Analyzing trace with hash 986010988, now seen corresponding path program 81 times [2020-10-24 02:38:36,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:38:36,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348035196] [2020-10-24 02:38:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:38:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:38:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-24 02:38:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-24 02:38:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-24 02:38:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-24 02:38:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-24 02:38:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-24 02:38:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-24 02:38:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:38:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-24 02:38:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-24 02:38:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-10-24 02:38:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-24 02:38:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-24 02:38:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-24 02:38:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-24 02:38:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-10-24 02:38:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:38:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-24 02:38:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-24 02:38:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-24 02:38:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-24 02:38:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-24 02:38:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-10-24 02:38:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-10-24 02:38:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-24 02:38:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-24 02:38:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-24 02:38:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-10-24 02:38:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-10-24 02:38:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-24 02:38:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-10-24 02:38:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-10-24 02:38:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-24 02:38:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-24 02:38:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-10-24 02:38:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2020-10-24 02:38:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-10-24 02:38:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-10-24 02:38:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-24 02:38:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-10-24 02:38:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2020-10-24 02:38:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 4884 proven. 5202 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-24 02:38:43,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348035196] [2020-10-24 02:38:43,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:38:43,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-24 02:38:43,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356727797] [2020-10-24 02:38:43,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-24 02:38:43,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:38:43,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-24 02:38:43,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1855, Invalid=5801, Unknown=0, NotChecked=0, Total=7656 [2020-10-24 02:38:43,616 INFO L87 Difference]: Start difference. First operand 699 states and 702 transitions. Second operand 88 states. [2020-10-24 02:39:12,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:39:12,893 INFO L93 Difference]: Finished difference Result 1307 states and 1436 transitions. [2020-10-24 02:39:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2020-10-24 02:39:12,895 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 693 [2020-10-24 02:39:12,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:39:12,898 INFO L225 Difference]: With dead ends: 1307 [2020-10-24 02:39:12,898 INFO L226 Difference]: Without dead ends: 1044 [2020-10-24 02:39:12,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9751 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=12329, Invalid=32827, Unknown=0, NotChecked=0, Total=45156 [2020-10-24 02:39:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-10-24 02:39:13,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 705. [2020-10-24 02:39:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-10-24 02:39:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 708 transitions. [2020-10-24 02:39:13,086 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 708 transitions. Word has length 693 [2020-10-24 02:39:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:39:13,102 INFO L481 AbstractCegarLoop]: Abstraction has 705 states and 708 transitions. [2020-10-24 02:39:13,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-24 02:39:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 708 transitions. [2020-10-24 02:39:13,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2020-10-24 02:39:13,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:39:13,106 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] [2020-10-24 02:39:13,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-24 02:39:13,106 INFO L429 AbstractCegarLoop]: === Iteration 85 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:39:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:39:13,107 INFO L82 PathProgramCache]: Analyzing trace with hash -106575884, now seen corresponding path program 82 times [2020-10-24 02:39:13,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:39:13,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406005947] [2020-10-24 02:39:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:39:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:39:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:39:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:39:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:39:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:39:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:39:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:39:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:39:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:39:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:39:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:39:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:39:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-24 02:39:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-24 02:39:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-24 02:39:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-24 02:39:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-24 02:39:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-24 02:39:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-24 02:39:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-24 02:39:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-24 02:39:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-24 02:39:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-10-24 02:39:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-24 02:39:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-24 02:39:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-24 02:39:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-24 02:39:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-24 02:39:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-10-24 02:39:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2020-10-24 02:39:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-24 02:39:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-24 02:39:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2020-10-24 02:39:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-10-24 02:39:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-24 02:39:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-10-24 02:39:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-24 02:39:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2020-10-24 02:39:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2020-10-24 02:39:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2020-10-24 02:39:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 673 [2020-10-24 02:39:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-24 02:39:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 13614 backedges. 5084 proven. 5250 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-24 02:39:16,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406005947] [2020-10-24 02:39:16,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:39:16,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-24 02:39:16,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016159427] [2020-10-24 02:39:16,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-24 02:39:16,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:39:16,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-24 02:39:16,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=1302, Unknown=0, NotChecked=0, Total=2256 [2020-10-24 02:39:16,347 INFO L87 Difference]: Start difference. First operand 705 states and 708 transitions. Second operand 48 states. [2020-10-24 02:39:24,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:39:24,545 INFO L93 Difference]: Finished difference Result 724 states and 727 transitions. [2020-10-24 02:39:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-24 02:39:24,547 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 699 [2020-10-24 02:39:24,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:39:24,550 INFO L225 Difference]: With dead ends: 724 [2020-10-24 02:39:24,550 INFO L226 Difference]: Without dead ends: 720 [2020-10-24 02:39:24,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2863, Invalid=5879, Unknown=0, NotChecked=0, Total=8742 [2020-10-24 02:39:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2020-10-24 02:39:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 715. [2020-10-24 02:39:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-10-24 02:39:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 718 transitions. [2020-10-24 02:39:24,750 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 718 transitions. Word has length 699 [2020-10-24 02:39:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:39:24,751 INFO L481 AbstractCegarLoop]: Abstraction has 715 states and 718 transitions. [2020-10-24 02:39:24,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-24 02:39:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 718 transitions. [2020-10-24 02:39:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2020-10-24 02:39:24,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:39:24,755 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:39:24,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-24 02:39:24,756 INFO L429 AbstractCegarLoop]: === Iteration 86 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:39:24,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:39:24,756 INFO L82 PathProgramCache]: Analyzing trace with hash 120053727, now seen corresponding path program 83 times [2020-10-24 02:39:24,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:39:24,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837759718] [2020-10-24 02:39:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:39:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:39:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-24 02:39:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:39:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-24 02:39:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-24 02:39:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-24 02:39:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-24 02:39:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-24 02:39:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-24 02:39:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 02:39:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-24 02:39:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:39:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-24 02:39:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-24 02:39:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-24 02:39:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-24 02:39:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-24 02:39:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-24 02:39:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-24 02:39:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-24 02:39:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-24 02:39:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-10-24 02:39:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-10-24 02:39:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-24 02:39:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-24 02:39:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-24 02:39:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-24 02:39:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-24 02:39:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-10-24 02:39:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2020-10-24 02:39:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-24 02:39:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-24 02:39:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2020-10-24 02:39:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-10-24 02:39:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-24 02:39:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-10-24 02:39:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-24 02:39:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2020-10-24 02:39:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2020-10-24 02:39:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2020-10-24 02:39:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 673 [2020-10-24 02:39:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-24 02:39:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:32,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2020-10-24 02:39:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 5129 proven. 5455 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2020-10-24 02:39:33,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837759718] [2020-10-24 02:39:33,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:39:33,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-24 02:39:33,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931420600] [2020-10-24 02:39:33,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-24 02:39:33,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:39:33,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-24 02:39:33,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1942, Invalid=6068, Unknown=0, NotChecked=0, Total=8010 [2020-10-24 02:39:33,052 INFO L87 Difference]: Start difference. First operand 715 states and 718 transitions. Second operand 90 states. [2020-10-24 02:40:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:40:02,506 INFO L93 Difference]: Finished difference Result 1337 states and 1469 transitions. [2020-10-24 02:40:02,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2020-10-24 02:40:02,509 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 709 [2020-10-24 02:40:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:40:02,512 INFO L225 Difference]: With dead ends: 1337 [2020-10-24 02:40:02,513 INFO L226 Difference]: Without dead ends: 1068 [2020-10-24 02:40:02,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10220 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=12923, Invalid=34383, Unknown=0, NotChecked=0, Total=47306 [2020-10-24 02:40:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-10-24 02:40:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 721. [2020-10-24 02:40:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-10-24 02:40:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 724 transitions. [2020-10-24 02:40:02,758 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 724 transitions. Word has length 709 [2020-10-24 02:40:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:40:02,759 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 724 transitions. [2020-10-24 02:40:02,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-10-24 02:40:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 724 transitions. [2020-10-24 02:40:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2020-10-24 02:40:02,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:40:02,764 INFO L422 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:40:02,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-24 02:40:02,764 INFO L429 AbstractCegarLoop]: === Iteration 87 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:40:02,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:40:02,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2061352345, now seen corresponding path program 84 times [2020-10-24 02:40:02,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:40:02,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002385355] [2020-10-24 02:40:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:40:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:40:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:40:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:40:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:40:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:40:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:40:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:40:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:40:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:40:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:40:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:40:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:40:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-24 02:40:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-24 02:40:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:40:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-24 02:40:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-10-24 02:40:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-24 02:40:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-24 02:40:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-24 02:40:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-10-24 02:40:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-10-24 02:40:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-24 02:40:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-10-24 02:40:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-10-24 02:40:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-10-24 02:40:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-24 02:40:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-24 02:40:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-24 02:40:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-10-24 02:40:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-24 02:40:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-10-24 02:40:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-24 02:40:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-10-24 02:40:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-24 02:40:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2020-10-24 02:40:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2020-10-24 02:40:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 649 [2020-10-24 02:40:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-24 02:40:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-24 02:40:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-24 02:40:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-24 02:40:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-24 02:40:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14282 backedges. 5334 proven. 5504 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2020-10-24 02:40:06,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002385355] [2020-10-24 02:40:06,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:40:06,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-24 02:40:06,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760603712] [2020-10-24 02:40:06,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-24 02:40:06,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:40:06,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-24 02:40:06,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=998, Invalid=1354, Unknown=0, NotChecked=0, Total=2352 [2020-10-24 02:40:06,746 INFO L87 Difference]: Start difference. First operand 721 states and 724 transitions. Second operand 49 states. [2020-10-24 02:40:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:40:15,748 INFO L93 Difference]: Finished difference Result 740 states and 743 transitions. [2020-10-24 02:40:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-24 02:40:15,751 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 715 [2020-10-24 02:40:15,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:40:15,754 INFO L225 Difference]: With dead ends: 740 [2020-10-24 02:40:15,754 INFO L226 Difference]: Without dead ends: 736 [2020-10-24 02:40:15,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2995, Invalid=6125, Unknown=0, NotChecked=0, Total=9120 [2020-10-24 02:40:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-10-24 02:40:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 731. [2020-10-24 02:40:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-24 02:40:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 734 transitions. [2020-10-24 02:40:15,978 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 734 transitions. Word has length 715 [2020-10-24 02:40:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:40:15,978 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 734 transitions. [2020-10-24 02:40:15,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-24 02:40:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 734 transitions. [2020-10-24 02:40:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2020-10-24 02:40:15,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:40:15,982 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:40:15,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-24 02:40:15,983 INFO L429 AbstractCegarLoop]: === Iteration 88 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:40:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:40:15,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1200629394, now seen corresponding path program 85 times [2020-10-24 02:40:15,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:40:15,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713286985] [2020-10-24 02:40:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:40:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:40:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-24 02:40:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-24 02:40:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-24 02:40:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-24 02:40:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:40:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-24 02:40:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-24 02:40:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-24 02:40:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-24 02:40:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-10-24 02:40:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-24 02:40:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-24 02:40:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-24 02:40:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:40:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-24 02:40:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-10-24 02:40:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-24 02:40:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-24 02:40:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-24 02:40:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-10-24 02:40:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-10-24 02:40:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-24 02:40:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-10-24 02:40:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-10-24 02:40:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-10-24 02:40:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-24 02:40:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-24 02:40:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-24 02:40:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-10-24 02:40:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-24 02:40:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-10-24 02:40:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-24 02:40:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-10-24 02:40:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-24 02:40:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2020-10-24 02:40:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2020-10-24 02:40:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 649 [2020-10-24 02:40:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-24 02:40:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-24 02:40:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-24 02:40:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-24 02:40:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-24 02:40:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-24 02:40:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 5380 proven. 5714 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-10-24 02:40:26,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713286985] [2020-10-24 02:40:26,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:40:26,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-10-24 02:40:26,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002639966] [2020-10-24 02:40:26,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-10-24 02:40:26,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:40:26,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-10-24 02:40:26,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=6341, Unknown=0, NotChecked=0, Total=8372 [2020-10-24 02:40:26,136 INFO L87 Difference]: Start difference. First operand 731 states and 734 transitions. Second operand 92 states.