/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:48:38,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:48:38,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:48:38,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 17:48:38,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:48:38,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:48:38,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:48:38,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:48:38,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:48:38,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:48:38,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:48:38,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:48:38,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:48:38,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:48:38,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:48:38,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:48:38,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:48:38,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:48:38,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:48:38,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:48:38,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:48:38,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:48:38,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:48:38,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:48:38,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:48:38,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:48:38,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:48:38,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:48:38,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:48:38,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:48:38,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:48:38,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:48:38,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:48:38,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:48:38,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:48:38,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:48:38,225 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:48:38,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:48:38,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:48:38,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:48:38,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:48:38,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:48:38,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:48:38,227 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:48:38,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:48:38,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:48:38,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:48:38,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:48:38,693 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:48:38,694 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-04 17:48:38,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6b9c502e/30564c8650f34f51bd9afccc99d10fa0/FLAG415655d57 [2020-09-04 17:48:39,342 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:48:39,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-04 17:48:39,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6b9c502e/30564c8650f34f51bd9afccc99d10fa0/FLAG415655d57 [2020-09-04 17:48:39,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6b9c502e/30564c8650f34f51bd9afccc99d10fa0 [2020-09-04 17:48:39,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:48:39,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:48:39,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:48:39,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:48:39,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:48:39,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:48:39" (1/1) ... [2020-09-04 17:48:39,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1391ef0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:39, skipping insertion in model container [2020-09-04 17:48:39,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:48:39" (1/1) ... [2020-09-04 17:48:39,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:48:39,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:48:40,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:48:40,015 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:48:40,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:48:40,057 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:48:40,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40 WrapperNode [2020-09-04 17:48:40,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:48:40,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:48:40,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:48:40,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:48:40,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (1/1) ... [2020-09-04 17:48:40,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (1/1) ... [2020-09-04 17:48:40,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (1/1) ... [2020-09-04 17:48:40,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (1/1) ... [2020-09-04 17:48:40,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (1/1) ... [2020-09-04 17:48:40,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (1/1) ... [2020-09-04 17:48:40,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (1/1) ... [2020-09-04 17:48:40,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:48:40,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:48:40,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:48:40,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:48:40,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:48:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:48:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:48:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:48:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:48:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:48:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:48:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:48:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:48:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:48:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:48:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:48:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:48:40,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:48:40,607 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:48:40,607 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 17:48:40,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:48:40 BoogieIcfgContainer [2020-09-04 17:48:40,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:48:40,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:48:40,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:48:40,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:48:40,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:48:39" (1/3) ... [2020-09-04 17:48:40,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2802415f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:48:40, skipping insertion in model container [2020-09-04 17:48:40,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:48:40" (2/3) ... [2020-09-04 17:48:40,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2802415f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:48:40, skipping insertion in model container [2020-09-04 17:48:40,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:48:40" (3/3) ... [2020-09-04 17:48:40,622 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-09-04 17:48:40,634 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:48:40,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:48:40,666 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:48:40,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:48:40,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:48:40,692 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:48:40,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:48:40,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:48:40,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:48:40,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:48:40,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:48:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-04 17:48:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 17:48:40,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:40,729 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] [2020-09-04 17:48:40,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:40,736 INFO L82 PathProgramCache]: Analyzing trace with hash -815601615, now seen corresponding path program 1 times [2020-09-04 17:48:40,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:40,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818716229] [2020-09-04 17:48:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:40,814 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:48:40,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818716229] [2020-09-04 17:48:40,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:40,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 17:48:40,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387384608] [2020-09-04 17:48:40,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 17:48:40,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:40,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 17:48:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:48:40,945 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-09-04 17:48:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:40,983 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2020-09-04 17:48:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 17:48:40,985 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-09-04 17:48:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:40,996 INFO L225 Difference]: With dead ends: 76 [2020-09-04 17:48:40,997 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 17:48:41,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:48:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 17:48:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-04 17:48:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 17:48:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-09-04 17:48:41,057 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 24 [2020-09-04 17:48:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:41,058 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-09-04 17:48:41,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 17:48:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-09-04 17:48:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 17:48:41,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:41,060 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] [2020-09-04 17:48:41,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:48:41,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:41,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2089093357, now seen corresponding path program 1 times [2020-09-04 17:48:41,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:41,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838564346] [2020-09-04 17:48:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:41,064 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:41,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:48:41,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838564346] [2020-09-04 17:48:41,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:41,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:48:41,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075831631] [2020-09-04 17:48:41,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:48:41,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:41,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:48:41,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:48:41,233 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2020-09-04 17:48:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:41,303 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-09-04 17:48:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:48:41,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-04 17:48:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:41,306 INFO L225 Difference]: With dead ends: 51 [2020-09-04 17:48:41,306 INFO L226 Difference]: Without dead ends: 49 [2020-09-04 17:48:41,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:48:41,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-04 17:48:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-09-04 17:48:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 17:48:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-04 17:48:41,325 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 28 [2020-09-04 17:48:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:41,327 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-04 17:48:41,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:48:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-04 17:48:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 17:48:41,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:41,331 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] [2020-09-04 17:48:41,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:48:41,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:41,333 INFO L82 PathProgramCache]: Analyzing trace with hash -594427423, now seen corresponding path program 1 times [2020-09-04 17:48:41,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:41,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080644045] [2020-09-04 17:48:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:41,360 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:41,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 17:48:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:48:41,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080644045] [2020-09-04 17:48:41,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:41,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 17:48:41,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701434213] [2020-09-04 17:48:41,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 17:48:41,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:41,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 17:48:41,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:48:41,466 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2020-09-04 17:48:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:41,646 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-09-04 17:48:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:48:41,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-04 17:48:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:41,652 INFO L225 Difference]: With dead ends: 82 [2020-09-04 17:48:41,652 INFO L226 Difference]: Without dead ends: 61 [2020-09-04 17:48:41,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:48:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-04 17:48:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-09-04 17:48:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-04 17:48:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-09-04 17:48:41,680 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 38 [2020-09-04 17:48:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:41,688 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-09-04 17:48:41,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 17:48:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-09-04 17:48:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 17:48:41,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:41,690 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] [2020-09-04 17:48:41,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:48:41,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:41,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1151378409, now seen corresponding path program 1 times [2020-09-04 17:48:41,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:41,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227003372] [2020-09-04 17:48:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:41,699 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:41,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:48:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:48:41,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227003372] [2020-09-04 17:48:41,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:41,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 17:48:41,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747214365] [2020-09-04 17:48:41,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 17:48:41,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:41,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 17:48:41,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:48:41,819 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-09-04 17:48:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:41,902 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-09-04 17:48:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 17:48:41,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-09-04 17:48:41,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:41,905 INFO L225 Difference]: With dead ends: 67 [2020-09-04 17:48:41,905 INFO L226 Difference]: Without dead ends: 65 [2020-09-04 17:48:41,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:48:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-04 17:48:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-09-04 17:48:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-04 17:48:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-04 17:48:41,919 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 44 [2020-09-04 17:48:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:41,920 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-04 17:48:41,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 17:48:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-04 17:48:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-04 17:48:41,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:41,922 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] [2020-09-04 17:48:41,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:48:41,922 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:41,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1388174135, now seen corresponding path program 2 times [2020-09-04 17:48:41,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:41,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926331560] [2020-09-04 17:48:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:41,932 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:48:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 17:48:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:48:42,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926331560] [2020-09-04 17:48:42,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:42,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 17:48:42,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429432445] [2020-09-04 17:48:42,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 17:48:42,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:42,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 17:48:42,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:48:42,051 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 8 states. [2020-09-04 17:48:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:42,229 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-09-04 17:48:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 17:48:42,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-04 17:48:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:42,231 INFO L225 Difference]: With dead ends: 112 [2020-09-04 17:48:42,231 INFO L226 Difference]: Without dead ends: 85 [2020-09-04 17:48:42,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:48:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-04 17:48:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2020-09-04 17:48:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 17:48:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-04 17:48:42,245 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 54 [2020-09-04 17:48:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:42,246 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-04 17:48:42,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 17:48:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-04 17:48:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-04 17:48:42,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:42,248 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] [2020-09-04 17:48:42,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 17:48:42,249 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:42,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1511501119, now seen corresponding path program 3 times [2020-09-04 17:48:42,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:42,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905512301] [2020-09-04 17:48:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:42,255 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:48:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 17:48:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:48:42,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905512301] [2020-09-04 17:48:42,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:42,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:48:42,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857414537] [2020-09-04 17:48:42,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:48:42,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:42,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:48:42,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:48:42,399 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 9 states. [2020-09-04 17:48:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:42,618 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2020-09-04 17:48:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 17:48:42,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-09-04 17:48:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:42,622 INFO L225 Difference]: With dead ends: 126 [2020-09-04 17:48:42,622 INFO L226 Difference]: Without dead ends: 99 [2020-09-04 17:48:42,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-09-04 17:48:42,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-04 17:48:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2020-09-04 17:48:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-04 17:48:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-04 17:48:42,641 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 60 [2020-09-04 17:48:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:42,641 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-04 17:48:42,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:48:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-04 17:48:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-04 17:48:42,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:42,643 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:48:42,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 17:48:42,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1048435015, now seen corresponding path program 4 times [2020-09-04 17:48:42,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:42,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692837439] [2020-09-04 17:48:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:42,650 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:48:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:48:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:48:42,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692837439] [2020-09-04 17:48:42,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:42,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 17:48:42,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764232031] [2020-09-04 17:48:42,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 17:48:42,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 17:48:42,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:48:42,830 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 8 states. [2020-09-04 17:48:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:42,903 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2020-09-04 17:48:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 17:48:42,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-04 17:48:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:42,906 INFO L225 Difference]: With dead ends: 95 [2020-09-04 17:48:42,906 INFO L226 Difference]: Without dead ends: 93 [2020-09-04 17:48:42,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:48:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-04 17:48:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2020-09-04 17:48:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-04 17:48:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-09-04 17:48:42,923 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 66 [2020-09-04 17:48:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:42,924 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-09-04 17:48:42,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 17:48:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-09-04 17:48:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-04 17:48:42,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:42,936 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-04 17:48:42,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 17:48:42,936 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:42,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:42,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1426826083, now seen corresponding path program 5 times [2020-09-04 17:48:42,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:42,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186270866] [2020-09-04 17:48:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:42,945 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:48:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:48:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-04 17:48:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-04 17:48:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 17:48:43,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186270866] [2020-09-04 17:48:43,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:43,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 17:48:43,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946832912] [2020-09-04 17:48:43,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 17:48:43,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:43,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 17:48:43,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:48:43,112 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 12 states. [2020-09-04 17:48:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:43,389 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2020-09-04 17:48:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 17:48:43,390 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-09-04 17:48:43,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:43,392 INFO L225 Difference]: With dead ends: 168 [2020-09-04 17:48:43,392 INFO L226 Difference]: Without dead ends: 129 [2020-09-04 17:48:43,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-04 17:48:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-04 17:48:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 94. [2020-09-04 17:48:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 17:48:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-09-04 17:48:43,408 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 86 [2020-09-04 17:48:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:43,408 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-09-04 17:48:43,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 17:48:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-09-04 17:48:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-04 17:48:43,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:43,411 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] [2020-09-04 17:48:43,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 17:48:43,411 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:43,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1621404309, now seen corresponding path program 6 times [2020-09-04 17:48:43,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:43,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431043413] [2020-09-04 17:48:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:43,416 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-04 17:48:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-04 17:48:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-04 17:48:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-04 17:48:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 17:48:43,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431043413] [2020-09-04 17:48:43,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:43,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 17:48:43,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537271813] [2020-09-04 17:48:43,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 17:48:43,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:43,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 17:48:43,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-04 17:48:43,582 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 13 states. [2020-09-04 17:48:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:43,941 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2020-09-04 17:48:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 17:48:43,942 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-09-04 17:48:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:43,944 INFO L225 Difference]: With dead ends: 182 [2020-09-04 17:48:43,944 INFO L226 Difference]: Without dead ends: 143 [2020-09-04 17:48:43,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2020-09-04 17:48:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-04 17:48:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2020-09-04 17:48:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-04 17:48:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-09-04 17:48:43,959 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 92 [2020-09-04 17:48:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:43,960 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-09-04 17:48:43,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 17:48:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-09-04 17:48:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-04 17:48:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:43,962 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] [2020-09-04 17:48:43,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 17:48:43,962 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:43,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1859084659, now seen corresponding path program 7 times [2020-09-04 17:48:43,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:43,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025395361] [2020-09-04 17:48:43,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:43,967 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:48:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 17:48:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 17:48:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 17:48:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 17:48:44,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025395361] [2020-09-04 17:48:44,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:44,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:48:44,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443089223] [2020-09-04 17:48:44,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:48:44,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:44,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:48:44,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:48:44,130 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 10 states. [2020-09-04 17:48:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:44,223 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-09-04 17:48:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 17:48:44,224 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-09-04 17:48:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:44,225 INFO L225 Difference]: With dead ends: 123 [2020-09-04 17:48:44,225 INFO L226 Difference]: Without dead ends: 121 [2020-09-04 17:48:44,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:48:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-04 17:48:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2020-09-04 17:48:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-04 17:48:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2020-09-04 17:48:44,244 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 98 [2020-09-04 17:48:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:44,244 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2020-09-04 17:48:44,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:48:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2020-09-04 17:48:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-04 17:48:44,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:44,248 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-09-04 17:48:44,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 17:48:44,248 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:44,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:44,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1617732209, now seen corresponding path program 8 times [2020-09-04 17:48:44,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:44,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143975577] [2020-09-04 17:48:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:44,254 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:48:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 17:48:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 17:48:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 17:48:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-04 17:48:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 17:48:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-04 17:48:44,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143975577] [2020-09-04 17:48:44,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:44,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 17:48:44,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447104178] [2020-09-04 17:48:44,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 17:48:44,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:44,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 17:48:44,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-04 17:48:44,599 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand 15 states. [2020-09-04 17:48:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:45,151 INFO L93 Difference]: Finished difference Result 224 states and 247 transitions. [2020-09-04 17:48:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 17:48:45,153 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 118 [2020-09-04 17:48:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:45,155 INFO L225 Difference]: With dead ends: 224 [2020-09-04 17:48:45,155 INFO L226 Difference]: Without dead ends: 173 [2020-09-04 17:48:45,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=465, Unknown=0, NotChecked=0, Total=702 [2020-09-04 17:48:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-04 17:48:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 122. [2020-09-04 17:48:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-04 17:48:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2020-09-04 17:48:45,177 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 118 [2020-09-04 17:48:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:45,179 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2020-09-04 17:48:45,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 17:48:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2020-09-04 17:48:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-04 17:48:45,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:45,181 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] [2020-09-04 17:48:45,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 17:48:45,181 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:45,181 INFO L82 PathProgramCache]: Analyzing trace with hash -581374057, now seen corresponding path program 9 times [2020-09-04 17:48:45,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:45,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711051395] [2020-09-04 17:48:45,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:45,188 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-04 17:48:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:48:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-04 17:48:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 17:48:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 17:48:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-04 17:48:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-04 17:48:45,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711051395] [2020-09-04 17:48:45,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:45,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:48:45,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943573649] [2020-09-04 17:48:45,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:48:45,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:48:45,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:48:45,401 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand 11 states. [2020-09-04 17:48:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:45,505 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-09-04 17:48:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 17:48:45,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-09-04 17:48:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:45,507 INFO L225 Difference]: With dead ends: 139 [2020-09-04 17:48:45,507 INFO L226 Difference]: Without dead ends: 137 [2020-09-04 17:48:45,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:48:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-04 17:48:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 132. [2020-09-04 17:48:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-04 17:48:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 137 transitions. [2020-09-04 17:48:45,528 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 137 transitions. Word has length 124 [2020-09-04 17:48:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:45,528 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 137 transitions. [2020-09-04 17:48:45,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:48:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 137 transitions. [2020-09-04 17:48:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-04 17:48:45,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:45,531 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2020-09-04 17:48:45,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 17:48:45,531 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:45,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1723472539, now seen corresponding path program 10 times [2020-09-04 17:48:45,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:45,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783485098] [2020-09-04 17:48:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:45,540 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-04 17:48:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:48:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-04 17:48:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 17:48:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 17:48:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-04 17:48:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 17:48:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-04 17:48:45,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783485098] [2020-09-04 17:48:45,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:45,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-04 17:48:45,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496060210] [2020-09-04 17:48:45,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 17:48:45,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:45,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 17:48:45,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-04 17:48:45,935 INFO L87 Difference]: Start difference. First operand 132 states and 137 transitions. Second operand 18 states. [2020-09-04 17:48:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:46,644 INFO L93 Difference]: Finished difference Result 254 states and 280 transitions. [2020-09-04 17:48:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 17:48:46,645 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 134 [2020-09-04 17:48:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:46,650 INFO L225 Difference]: With dead ends: 254 [2020-09-04 17:48:46,650 INFO L226 Difference]: Without dead ends: 197 [2020-09-04 17:48:46,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-09-04 17:48:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-04 17:48:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 138. [2020-09-04 17:48:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-04 17:48:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 143 transitions. [2020-09-04 17:48:46,685 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 143 transitions. Word has length 134 [2020-09-04 17:48:46,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:46,686 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 143 transitions. [2020-09-04 17:48:46,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 17:48:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 143 transitions. [2020-09-04 17:48:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-04 17:48:46,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:46,690 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] [2020-09-04 17:48:46,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 17:48:46,691 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:46,692 INFO L82 PathProgramCache]: Analyzing trace with hash 318138221, now seen corresponding path program 11 times [2020-09-04 17:48:46,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:46,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857184160] [2020-09-04 17:48:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:46,707 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-04 17:48:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-04 17:48:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 17:48:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-04 17:48:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:48:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 17:48:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 17:48:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-04 17:48:47,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857184160] [2020-09-04 17:48:47,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:47,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 17:48:47,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529445527] [2020-09-04 17:48:47,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 17:48:47,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:47,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 17:48:47,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-09-04 17:48:47,143 INFO L87 Difference]: Start difference. First operand 138 states and 143 transitions. Second operand 19 states. [2020-09-04 17:48:47,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:47,763 INFO L93 Difference]: Finished difference Result 268 states and 297 transitions. [2020-09-04 17:48:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 17:48:47,764 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 140 [2020-09-04 17:48:47,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:47,766 INFO L225 Difference]: With dead ends: 268 [2020-09-04 17:48:47,766 INFO L226 Difference]: Without dead ends: 211 [2020-09-04 17:48:47,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=795, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 17:48:47,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-04 17:48:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 144. [2020-09-04 17:48:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-04 17:48:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 149 transitions. [2020-09-04 17:48:47,786 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 149 transitions. Word has length 140 [2020-09-04 17:48:47,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:47,786 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 149 transitions. [2020-09-04 17:48:47,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 17:48:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 149 transitions. [2020-09-04 17:48:47,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-04 17:48:47,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:47,788 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] [2020-09-04 17:48:47,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 17:48:47,789 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:47,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:47,789 INFO L82 PathProgramCache]: Analyzing trace with hash 435110773, now seen corresponding path program 12 times [2020-09-04 17:48:47,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:47,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280899380] [2020-09-04 17:48:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:47,794 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-04 17:48:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-04 17:48:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 17:48:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:48:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-04 17:48:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 17:48:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 17:48:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-04 17:48:48,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280899380] [2020-09-04 17:48:48,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:48,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 17:48:48,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317848362] [2020-09-04 17:48:48,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 17:48:48,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:48,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 17:48:48,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-04 17:48:48,008 INFO L87 Difference]: Start difference. First operand 144 states and 149 transitions. Second operand 13 states. [2020-09-04 17:48:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:48,177 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2020-09-04 17:48:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 17:48:48,177 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-09-04 17:48:48,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:48,179 INFO L225 Difference]: With dead ends: 167 [2020-09-04 17:48:48,179 INFO L226 Difference]: Without dead ends: 165 [2020-09-04 17:48:48,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-09-04 17:48:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-04 17:48:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2020-09-04 17:48:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-04 17:48:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2020-09-04 17:48:48,203 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 146 [2020-09-04 17:48:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:48,204 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 166 transitions. [2020-09-04 17:48:48,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 17:48:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 166 transitions. [2020-09-04 17:48:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 17:48:48,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:48,208 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2020-09-04 17:48:48,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 17:48:48,208 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:48,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1491064175, now seen corresponding path program 13 times [2020-09-04 17:48:48,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:48,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762755745] [2020-09-04 17:48:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:48,215 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-04 17:48:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-04 17:48:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 17:48:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:48:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-04 17:48:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 17:48:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 17:48:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:48:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-04 17:48:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 17:48:48,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762755745] [2020-09-04 17:48:48,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:48,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-09-04 17:48:48,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819264507] [2020-09-04 17:48:48,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 17:48:48,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:48,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 17:48:48,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-04 17:48:48,638 INFO L87 Difference]: Start difference. First operand 160 states and 166 transitions. Second operand 22 states. [2020-09-04 17:48:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:49,365 INFO L93 Difference]: Finished difference Result 310 states and 343 transitions. [2020-09-04 17:48:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 17:48:49,365 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 166 [2020-09-04 17:48:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:49,369 INFO L225 Difference]: With dead ends: 310 [2020-09-04 17:48:49,369 INFO L226 Difference]: Without dead ends: 241 [2020-09-04 17:48:49,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 17:48:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-04 17:48:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 166. [2020-09-04 17:48:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-04 17:48:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2020-09-04 17:48:49,394 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 166 [2020-09-04 17:48:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:49,394 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 172 transitions. [2020-09-04 17:48:49,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 17:48:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 172 transitions. [2020-09-04 17:48:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 17:48:49,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:49,399 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] [2020-09-04 17:48:49,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 17:48:49,399 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:49,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:49,400 INFO L82 PathProgramCache]: Analyzing trace with hash -586773351, now seen corresponding path program 14 times [2020-09-04 17:48:49,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:49,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385600745] [2020-09-04 17:48:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:49,406 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-04 17:48:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:48:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-04 17:48:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-04 17:48:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-04 17:48:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 17:48:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 17:48:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:48:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:48:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 17:48:49,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385600745] [2020-09-04 17:48:49,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:49,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 17:48:49,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566389823] [2020-09-04 17:48:49,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 17:48:49,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:49,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 17:48:49,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-09-04 17:48:49,808 INFO L87 Difference]: Start difference. First operand 166 states and 172 transitions. Second operand 23 states. [2020-09-04 17:48:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:50,640 INFO L93 Difference]: Finished difference Result 324 states and 360 transitions. [2020-09-04 17:48:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 17:48:50,640 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 172 [2020-09-04 17:48:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:50,644 INFO L225 Difference]: With dead ends: 324 [2020-09-04 17:48:50,644 INFO L226 Difference]: Without dead ends: 255 [2020-09-04 17:48:50,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=593, Invalid=1213, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 17:48:50,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-04 17:48:50,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 172. [2020-09-04 17:48:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-04 17:48:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 178 transitions. [2020-09-04 17:48:50,664 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 178 transitions. Word has length 172 [2020-09-04 17:48:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:50,664 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 178 transitions. [2020-09-04 17:48:50,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 17:48:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 178 transitions. [2020-09-04 17:48:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-04 17:48:50,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:50,666 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] [2020-09-04 17:48:50,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 17:48:50,667 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:50,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:50,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1481459873, now seen corresponding path program 15 times [2020-09-04 17:48:50,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:50,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676891351] [2020-09-04 17:48:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:50,673 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 17:48:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-04 17:48:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 17:48:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-04 17:48:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:48:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 17:48:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 17:48:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 17:48:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:48:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 17:48:50,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676891351] [2020-09-04 17:48:50,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:50,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 17:48:50,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21298096] [2020-09-04 17:48:50,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 17:48:50,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:50,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 17:48:50,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-09-04 17:48:50,979 INFO L87 Difference]: Start difference. First operand 172 states and 178 transitions. Second operand 15 states. [2020-09-04 17:48:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:51,134 INFO L93 Difference]: Finished difference Result 195 states and 202 transitions. [2020-09-04 17:48:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 17:48:51,135 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 178 [2020-09-04 17:48:51,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:51,138 INFO L225 Difference]: With dead ends: 195 [2020-09-04 17:48:51,138 INFO L226 Difference]: Without dead ends: 193 [2020-09-04 17:48:51,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-09-04 17:48:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-04 17:48:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2020-09-04 17:48:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-04 17:48:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 195 transitions. [2020-09-04 17:48:51,162 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 195 transitions. Word has length 178 [2020-09-04 17:48:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:51,163 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 195 transitions. [2020-09-04 17:48:51,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 17:48:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 195 transitions. [2020-09-04 17:48:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-04 17:48:51,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:51,167 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2020-09-04 17:48:51,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 17:48:51,168 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash 831775165, now seen corresponding path program 16 times [2020-09-04 17:48:51,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:51,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734730737] [2020-09-04 17:48:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:51,178 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 17:48:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-04 17:48:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 17:48:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-04 17:48:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:48:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 17:48:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 17:48:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 17:48:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:48:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-04 17:48:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-04 17:48:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-04 17:48:51,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734730737] [2020-09-04 17:48:51,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:51,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-09-04 17:48:51,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85634445] [2020-09-04 17:48:51,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-04 17:48:51,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:51,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-04 17:48:51,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-09-04 17:48:51,689 INFO L87 Difference]: Start difference. First operand 188 states and 195 transitions. Second operand 26 states. [2020-09-04 17:48:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:52,650 INFO L93 Difference]: Finished difference Result 366 states and 406 transitions. [2020-09-04 17:48:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 17:48:52,651 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 198 [2020-09-04 17:48:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:52,654 INFO L225 Difference]: With dead ends: 366 [2020-09-04 17:48:52,654 INFO L226 Difference]: Without dead ends: 285 [2020-09-04 17:48:52,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=720, Invalid=1536, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 17:48:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-04 17:48:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 194. [2020-09-04 17:48:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-04 17:48:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 201 transitions. [2020-09-04 17:48:52,673 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 201 transitions. Word has length 198 [2020-09-04 17:48:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:52,674 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 201 transitions. [2020-09-04 17:48:52,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-04 17:48:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 201 transitions. [2020-09-04 17:48:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 17:48:52,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:52,677 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] [2020-09-04 17:48:52,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 17:48:52,677 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:52,677 INFO L82 PathProgramCache]: Analyzing trace with hash -735042619, now seen corresponding path program 17 times [2020-09-04 17:48:52,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:52,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809133771] [2020-09-04 17:48:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:52,682 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 17:48:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 17:48:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-04 17:48:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 17:48:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 17:48:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 17:48:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 17:48:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:48:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-04 17:48:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-04 17:48:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 17:48:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-04 17:48:53,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809133771] [2020-09-04 17:48:53,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:53,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-09-04 17:48:53,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396987502] [2020-09-04 17:48:53,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 17:48:53,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:53,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 17:48:53,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-09-04 17:48:53,235 INFO L87 Difference]: Start difference. First operand 194 states and 201 transitions. Second operand 27 states. [2020-09-04 17:48:54,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:54,381 INFO L93 Difference]: Finished difference Result 380 states and 423 transitions. [2020-09-04 17:48:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-04 17:48:54,381 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 204 [2020-09-04 17:48:54,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:54,384 INFO L225 Difference]: With dead ends: 380 [2020-09-04 17:48:54,384 INFO L226 Difference]: Without dead ends: 299 [2020-09-04 17:48:54,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=831, Invalid=1719, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 17:48:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-09-04 17:48:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 200. [2020-09-04 17:48:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-04 17:48:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 207 transitions. [2020-09-04 17:48:54,406 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 207 transitions. Word has length 204 [2020-09-04 17:48:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:54,406 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 207 transitions. [2020-09-04 17:48:54,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 17:48:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 207 transitions. [2020-09-04 17:48:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-04 17:48:54,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:54,409 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] [2020-09-04 17:48:54,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 17:48:54,410 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:54,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:54,410 INFO L82 PathProgramCache]: Analyzing trace with hash 340049869, now seen corresponding path program 18 times [2020-09-04 17:48:54,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:54,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141995574] [2020-09-04 17:48:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:54,420 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-04 17:48:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:48:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 17:48:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 17:48:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 17:48:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-04 17:48:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-04 17:48:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 17:48:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 17:48:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:48:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:48:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-04 17:48:54,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141995574] [2020-09-04 17:48:54,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:54,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 17:48:54,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292160876] [2020-09-04 17:48:54,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 17:48:54,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:54,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 17:48:54,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-09-04 17:48:54,739 INFO L87 Difference]: Start difference. First operand 200 states and 207 transitions. Second operand 17 states. [2020-09-04 17:48:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:54,943 INFO L93 Difference]: Finished difference Result 223 states and 231 transitions. [2020-09-04 17:48:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 17:48:54,943 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 210 [2020-09-04 17:48:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:54,946 INFO L225 Difference]: With dead ends: 223 [2020-09-04 17:48:54,947 INFO L226 Difference]: Without dead ends: 221 [2020-09-04 17:48:54,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2020-09-04 17:48:54,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-04 17:48:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 216. [2020-09-04 17:48:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-04 17:48:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 224 transitions. [2020-09-04 17:48:54,966 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 224 transitions. Word has length 210 [2020-09-04 17:48:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:54,967 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 224 transitions. [2020-09-04 17:48:54,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 17:48:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 224 transitions. [2020-09-04 17:48:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-04 17:48:54,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:54,970 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 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] [2020-09-04 17:48:54,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 17:48:54,970 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1871443223, now seen corresponding path program 19 times [2020-09-04 17:48:54,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:54,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659440757] [2020-09-04 17:48:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:54,979 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-04 17:48:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:48:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 17:48:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 17:48:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 17:48:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-04 17:48:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-04 17:48:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 17:48:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 17:48:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:48:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:48:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-04 17:48:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-04 17:48:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-04 17:48:55,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659440757] [2020-09-04 17:48:55,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:55,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-09-04 17:48:55,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511305701] [2020-09-04 17:48:55,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 17:48:55,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:55,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 17:48:55,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-09-04 17:48:55,611 INFO L87 Difference]: Start difference. First operand 216 states and 224 transitions. Second operand 29 states. [2020-09-04 17:48:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:56,988 INFO L93 Difference]: Finished difference Result 422 states and 469 transitions. [2020-09-04 17:48:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 17:48:56,989 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 230 [2020-09-04 17:48:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:56,992 INFO L225 Difference]: With dead ends: 422 [2020-09-04 17:48:56,992 INFO L226 Difference]: Without dead ends: 329 [2020-09-04 17:48:56,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=965, Invalid=2005, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 17:48:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-09-04 17:48:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 222. [2020-09-04 17:48:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-04 17:48:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 230 transitions. [2020-09-04 17:48:57,013 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 230 transitions. Word has length 230 [2020-09-04 17:48:57,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:57,014 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 230 transitions. [2020-09-04 17:48:57,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 17:48:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 230 transitions. [2020-09-04 17:48:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-04 17:48:57,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:57,016 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] [2020-09-04 17:48:57,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 17:48:57,016 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1346776305, now seen corresponding path program 20 times [2020-09-04 17:48:57,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:57,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720839360] [2020-09-04 17:48:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:57,026 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:48:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-04 17:48:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 17:48:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 17:48:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:48:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-04 17:48:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 17:48:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 17:48:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 17:48:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:48:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-04 17:48:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 17:48:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:48:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-04 17:48:57,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720839360] [2020-09-04 17:48:57,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:57,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-04 17:48:57,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903650195] [2020-09-04 17:48:57,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 17:48:57,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:57,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 17:48:57,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-09-04 17:48:57,458 INFO L87 Difference]: Start difference. First operand 222 states and 230 transitions. Second operand 18 states. [2020-09-04 17:48:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:57,629 INFO L93 Difference]: Finished difference Result 239 states and 247 transitions. [2020-09-04 17:48:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 17:48:57,630 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 236 [2020-09-04 17:48:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:57,632 INFO L225 Difference]: With dead ends: 239 [2020-09-04 17:48:57,632 INFO L226 Difference]: Without dead ends: 237 [2020-09-04 17:48:57,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2020-09-04 17:48:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-04 17:48:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2020-09-04 17:48:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-04 17:48:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 240 transitions. [2020-09-04 17:48:57,655 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 240 transitions. Word has length 236 [2020-09-04 17:48:57,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:57,658 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 240 transitions. [2020-09-04 17:48:57,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 17:48:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 240 transitions. [2020-09-04 17:48:57,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-04 17:48:57,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:57,660 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 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] [2020-09-04 17:48:57,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 17:48:57,660 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:57,661 INFO L82 PathProgramCache]: Analyzing trace with hash -554583489, now seen corresponding path program 21 times [2020-09-04 17:48:57,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:57,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761846464] [2020-09-04 17:48:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:57,666 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:48:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:48:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-04 17:48:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 17:48:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 17:48:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:48:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-04 17:48:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 17:48:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 17:48:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 17:48:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:48:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-04 17:48:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 17:48:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:48:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:48:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:48:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-04 17:48:58,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761846464] [2020-09-04 17:48:58,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:48:58,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-09-04 17:48:58,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60370127] [2020-09-04 17:48:58,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 17:48:58,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:48:58,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 17:48:58,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-09-04 17:48:58,383 INFO L87 Difference]: Start difference. First operand 232 states and 240 transitions. Second operand 32 states. [2020-09-04 17:48:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:48:59,841 INFO L93 Difference]: Finished difference Result 452 states and 502 transitions. [2020-09-04 17:48:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-04 17:48:59,841 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 246 [2020-09-04 17:48:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:48:59,844 INFO L225 Difference]: With dead ends: 452 [2020-09-04 17:48:59,844 INFO L226 Difference]: Without dead ends: 353 [2020-09-04 17:48:59,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1125, Invalid=2415, Unknown=0, NotChecked=0, Total=3540 [2020-09-04 17:48:59,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-09-04 17:48:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 238. [2020-09-04 17:48:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-04 17:48:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 246 transitions. [2020-09-04 17:48:59,868 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 246 transitions. Word has length 246 [2020-09-04 17:48:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:48:59,869 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 246 transitions. [2020-09-04 17:48:59,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 17:48:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 246 transitions. [2020-09-04 17:48:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-04 17:48:59,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:48:59,871 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] [2020-09-04 17:48:59,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 17:48:59,871 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:48:59,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:48:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash -812725177, now seen corresponding path program 22 times [2020-09-04 17:48:59,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:48:59,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439844028] [2020-09-04 17:48:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:48:59,878 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:48:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-04 17:49:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-04 17:49:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 17:49:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 17:49:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:49:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:49:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 17:49:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:49:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 17:49:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-04 17:49:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-04 17:49:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-09-04 17:49:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 17:49:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 17:49:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-04 17:49:00,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439844028] [2020-09-04 17:49:00,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:00,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-09-04 17:49:00,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783448740] [2020-09-04 17:49:00,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 17:49:00,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:00,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 17:49:00,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 17:49:00,683 INFO L87 Difference]: Start difference. First operand 238 states and 246 transitions. Second operand 33 states. [2020-09-04 17:49:02,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:02,270 INFO L93 Difference]: Finished difference Result 466 states and 519 transitions. [2020-09-04 17:49:02,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 17:49:02,270 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 252 [2020-09-04 17:49:02,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:02,276 INFO L225 Difference]: With dead ends: 466 [2020-09-04 17:49:02,277 INFO L226 Difference]: Without dead ends: 367 [2020-09-04 17:49:02,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1263, Invalid=2643, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 17:49:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-09-04 17:49:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 244. [2020-09-04 17:49:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-04 17:49:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 252 transitions. [2020-09-04 17:49:02,310 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 252 transitions. Word has length 252 [2020-09-04 17:49:02,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:02,311 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 252 transitions. [2020-09-04 17:49:02,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 17:49:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 252 transitions. [2020-09-04 17:49:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-04 17:49:02,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:02,313 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] [2020-09-04 17:49:02,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 17:49:02,313 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:02,314 INFO L82 PathProgramCache]: Analyzing trace with hash -305645489, now seen corresponding path program 23 times [2020-09-04 17:49:02,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:02,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781468749] [2020-09-04 17:49:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:02,325 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-04 17:49:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:49:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 17:49:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 17:49:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 17:49:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:49:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-04 17:49:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-04 17:49:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 17:49:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 17:49:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:49:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-09-04 17:49:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 17:49:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-09-04 17:49:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-04 17:49:02,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781468749] [2020-09-04 17:49:02,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:02,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-04 17:49:02,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747400793] [2020-09-04 17:49:02,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 17:49:02,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 17:49:02,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-09-04 17:49:02,798 INFO L87 Difference]: Start difference. First operand 244 states and 252 transitions. Second operand 20 states. [2020-09-04 17:49:03,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:03,028 INFO L93 Difference]: Finished difference Result 267 states and 276 transitions. [2020-09-04 17:49:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 17:49:03,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 258 [2020-09-04 17:49:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:03,030 INFO L225 Difference]: With dead ends: 267 [2020-09-04 17:49:03,030 INFO L226 Difference]: Without dead ends: 265 [2020-09-04 17:49:03,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=259, Unknown=0, NotChecked=0, Total=420 [2020-09-04 17:49:03,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-04 17:49:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 260. [2020-09-04 17:49:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-09-04 17:49:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 269 transitions. [2020-09-04 17:49:03,059 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 269 transitions. Word has length 258 [2020-09-04 17:49:03,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:03,060 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 269 transitions. [2020-09-04 17:49:03,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 17:49:03,060 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 269 transitions. [2020-09-04 17:49:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-09-04 17:49:03,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:03,062 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2020-09-04 17:49:03,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 17:49:03,062 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:03,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:03,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1556599189, now seen corresponding path program 24 times [2020-09-04 17:49:03,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:03,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559154174] [2020-09-04 17:49:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:03,070 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-04 17:49:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:49:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 17:49:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 17:49:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 17:49:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:49:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-04 17:49:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-04 17:49:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 17:49:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 17:49:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:49:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-09-04 17:49:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 17:49:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-09-04 17:49:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-04 17:49:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 17:49:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-04 17:49:03,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559154174] [2020-09-04 17:49:03,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:03,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-09-04 17:49:03,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981418958] [2020-09-04 17:49:03,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-04 17:49:03,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:03,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-04 17:49:03,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 17:49:03,942 INFO L87 Difference]: Start difference. First operand 260 states and 269 transitions. Second operand 36 states. [2020-09-04 17:49:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:05,767 INFO L93 Difference]: Finished difference Result 508 states and 565 transitions. [2020-09-04 17:49:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-04 17:49:05,768 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 278 [2020-09-04 17:49:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:05,770 INFO L225 Difference]: With dead ends: 508 [2020-09-04 17:49:05,770 INFO L226 Difference]: Without dead ends: 397 [2020-09-04 17:49:05,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1445, Invalid=3111, Unknown=0, NotChecked=0, Total=4556 [2020-09-04 17:49:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-09-04 17:49:05,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 266. [2020-09-04 17:49:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-04 17:49:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 275 transitions. [2020-09-04 17:49:05,799 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 275 transitions. Word has length 278 [2020-09-04 17:49:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:05,799 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 275 transitions. [2020-09-04 17:49:05,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-04 17:49:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 275 transitions. [2020-09-04 17:49:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-04 17:49:05,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:05,802 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] [2020-09-04 17:49:05,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 17:49:05,802 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash -104128397, now seen corresponding path program 25 times [2020-09-04 17:49:05,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:05,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649385784] [2020-09-04 17:49:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:05,811 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 17:49:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 17:49:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 17:49:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 17:49:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:49:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-04 17:49:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-04 17:49:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 17:49:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 17:49:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 17:49:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 17:49:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-09-04 17:49:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 17:49:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:49:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-04 17:49:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:49:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-04 17:49:06,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649385784] [2020-09-04 17:49:06,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:06,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-09-04 17:49:06,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014544237] [2020-09-04 17:49:06,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 17:49:06,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:06,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 17:49:06,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 17:49:06,772 INFO L87 Difference]: Start difference. First operand 266 states and 275 transitions. Second operand 37 states. [2020-09-04 17:49:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:08,668 INFO L93 Difference]: Finished difference Result 522 states and 582 transitions. [2020-09-04 17:49:08,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-04 17:49:08,668 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 284 [2020-09-04 17:49:08,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:08,671 INFO L225 Difference]: With dead ends: 522 [2020-09-04 17:49:08,671 INFO L226 Difference]: Without dead ends: 411 [2020-09-04 17:49:08,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1601, Invalid=3369, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 17:49:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-09-04 17:49:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 272. [2020-09-04 17:49:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-04 17:49:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 281 transitions. [2020-09-04 17:49:08,702 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 281 transitions. Word has length 284 [2020-09-04 17:49:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:08,702 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 281 transitions. [2020-09-04 17:49:08,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 17:49:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 281 transitions. [2020-09-04 17:49:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-04 17:49:08,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:08,705 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] [2020-09-04 17:49:08,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 17:49:08,705 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:08,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:08,706 INFO L82 PathProgramCache]: Analyzing trace with hash -435000197, now seen corresponding path program 26 times [2020-09-04 17:49:08,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:08,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981361570] [2020-09-04 17:49:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:08,716 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 17:49:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 17:49:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-04 17:49:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-04 17:49:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 17:49:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 17:49:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:49:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:49:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-04 17:49:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-04 17:49:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-04 17:49:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-04 17:49:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 17:49:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 17:49:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 17:49:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:49:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-04 17:49:09,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981361570] [2020-09-04 17:49:09,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:09,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-09-04 17:49:09,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891525685] [2020-09-04 17:49:09,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 17:49:09,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:09,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 17:49:09,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-09-04 17:49:09,181 INFO L87 Difference]: Start difference. First operand 272 states and 281 transitions. Second operand 22 states. [2020-09-04 17:49:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:09,436 INFO L93 Difference]: Finished difference Result 295 states and 305 transitions. [2020-09-04 17:49:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 17:49:09,437 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 290 [2020-09-04 17:49:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:09,439 INFO L225 Difference]: With dead ends: 295 [2020-09-04 17:49:09,439 INFO L226 Difference]: Without dead ends: 293 [2020-09-04 17:49:09,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-09-04 17:49:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-04 17:49:09,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 288. [2020-09-04 17:49:09,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-09-04 17:49:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 298 transitions. [2020-09-04 17:49:09,481 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 298 transitions. Word has length 290 [2020-09-04 17:49:09,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:09,482 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 298 transitions. [2020-09-04 17:49:09,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 17:49:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 298 transitions. [2020-09-04 17:49:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-04 17:49:09,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:09,487 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 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] [2020-09-04 17:49:09,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 17:49:09,487 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:09,488 INFO L82 PathProgramCache]: Analyzing trace with hash -827681641, now seen corresponding path program 27 times [2020-09-04 17:49:09,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:09,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001403390] [2020-09-04 17:49:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:09,492 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 17:49:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 17:49:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-04 17:49:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-04 17:49:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 17:49:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 17:49:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:49:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:49:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-04 17:49:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-04 17:49:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-04 17:49:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-04 17:49:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 17:49:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 17:49:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 17:49:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:49:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:49:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-04 17:49:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-04 17:49:10,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001403390] [2020-09-04 17:49:10,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:10,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2020-09-04 17:49:10,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053355076] [2020-09-04 17:49:10,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-09-04 17:49:10,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-09-04 17:49:10,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 17:49:10,635 INFO L87 Difference]: Start difference. First operand 288 states and 298 transitions. Second operand 40 states. [2020-09-04 17:49:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:13,019 INFO L93 Difference]: Finished difference Result 564 states and 628 transitions. [2020-09-04 17:49:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-09-04 17:49:13,020 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 310 [2020-09-04 17:49:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:13,023 INFO L225 Difference]: With dead ends: 564 [2020-09-04 17:49:13,023 INFO L226 Difference]: Without dead ends: 441 [2020-09-04 17:49:13,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1805, Invalid=3895, Unknown=0, NotChecked=0, Total=5700 [2020-09-04 17:49:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-09-04 17:49:13,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 294. [2020-09-04 17:49:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-09-04 17:49:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 304 transitions. [2020-09-04 17:49:13,056 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 304 transitions. Word has length 310 [2020-09-04 17:49:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:13,056 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 304 transitions. [2020-09-04 17:49:13,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-09-04 17:49:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 304 transitions. [2020-09-04 17:49:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-09-04 17:49:13,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:13,059 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] [2020-09-04 17:49:13,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 17:49:13,059 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1001612959, now seen corresponding path program 28 times [2020-09-04 17:49:13,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:13,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837141063] [2020-09-04 17:49:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:13,065 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 17:49:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:49:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-04 17:49:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 17:49:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 17:49:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 17:49:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:49:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-04 17:49:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 17:49:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:49:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:49:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-09-04 17:49:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-09-04 17:49:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-09-04 17:49:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-09-04 17:49:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:49:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:49:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:49:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-04 17:49:14,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837141063] [2020-09-04 17:49:14,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:14,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-09-04 17:49:14,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510075531] [2020-09-04 17:49:14,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 17:49:14,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:14,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 17:49:14,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 17:49:14,196 INFO L87 Difference]: Start difference. First operand 294 states and 304 transitions. Second operand 41 states. [2020-09-04 17:49:16,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:16,672 INFO L93 Difference]: Finished difference Result 578 states and 645 transitions. [2020-09-04 17:49:16,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-09-04 17:49:16,673 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 316 [2020-09-04 17:49:16,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:16,676 INFO L225 Difference]: With dead ends: 578 [2020-09-04 17:49:16,676 INFO L226 Difference]: Without dead ends: 455 [2020-09-04 17:49:16,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1979, Invalid=4183, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 17:49:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-09-04 17:49:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 300. [2020-09-04 17:49:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-09-04 17:49:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 310 transitions. [2020-09-04 17:49:16,712 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 310 transitions. Word has length 316 [2020-09-04 17:49:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:16,712 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 310 transitions. [2020-09-04 17:49:16,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 17:49:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 310 transitions. [2020-09-04 17:49:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-09-04 17:49:16,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:16,715 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] [2020-09-04 17:49:16,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 17:49:16,715 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1183355559, now seen corresponding path program 29 times [2020-09-04 17:49:16,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:16,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461097051] [2020-09-04 17:49:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:16,728 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 17:49:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:49:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:49:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 17:49:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:49:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 17:49:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-04 17:49:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-04 17:49:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-09-04 17:49:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 17:49:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 17:49:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 17:49:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 17:49:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:49:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:49:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:49:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:49:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:49:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-04 17:49:17,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461097051] [2020-09-04 17:49:17,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:17,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-09-04 17:49:17,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557015921] [2020-09-04 17:49:17,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 17:49:17,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:17,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 17:49:17,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-09-04 17:49:17,412 INFO L87 Difference]: Start difference. First operand 300 states and 310 transitions. Second operand 24 states. [2020-09-04 17:49:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:17,666 INFO L93 Difference]: Finished difference Result 323 states and 334 transitions. [2020-09-04 17:49:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 17:49:17,666 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 322 [2020-09-04 17:49:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:17,669 INFO L225 Difference]: With dead ends: 323 [2020-09-04 17:49:17,669 INFO L226 Difference]: Without dead ends: 321 [2020-09-04 17:49:17,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2020-09-04 17:49:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-04 17:49:17,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 316. [2020-09-04 17:49:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-09-04 17:49:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 327 transitions. [2020-09-04 17:49:17,697 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 327 transitions. Word has length 322 [2020-09-04 17:49:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:17,697 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 327 transitions. [2020-09-04 17:49:17,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 17:49:17,697 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 327 transitions. [2020-09-04 17:49:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-09-04 17:49:17,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:17,699 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 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] [2020-09-04 17:49:17,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 17:49:17,699 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:17,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:17,699 INFO L82 PathProgramCache]: Analyzing trace with hash 920382659, now seen corresponding path program 30 times [2020-09-04 17:49:17,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:17,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938896953] [2020-09-04 17:49:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:17,703 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 17:49:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:49:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:49:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 17:49:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:49:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 17:49:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-04 17:49:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-04 17:49:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-09-04 17:49:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 17:49:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 17:49:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 17:49:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 17:49:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:49:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:49:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:49:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:49:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:49:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:49:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:49:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-04 17:49:18,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938896953] [2020-09-04 17:49:18,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:18,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-09-04 17:49:18,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119571304] [2020-09-04 17:49:18,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-09-04 17:49:18,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:18,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-09-04 17:49:18,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 17:49:18,987 INFO L87 Difference]: Start difference. First operand 316 states and 327 transitions. Second operand 44 states. [2020-09-04 17:49:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:21,840 INFO L93 Difference]: Finished difference Result 620 states and 691 transitions. [2020-09-04 17:49:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-09-04 17:49:21,841 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 342 [2020-09-04 17:49:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:21,845 INFO L225 Difference]: With dead ends: 620 [2020-09-04 17:49:21,845 INFO L226 Difference]: Without dead ends: 485 [2020-09-04 17:49:21,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2205, Invalid=4767, Unknown=0, NotChecked=0, Total=6972 [2020-09-04 17:49:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-09-04 17:49:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 322. [2020-09-04 17:49:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-09-04 17:49:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 333 transitions. [2020-09-04 17:49:21,886 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 333 transitions. Word has length 342 [2020-09-04 17:49:21,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:21,886 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 333 transitions. [2020-09-04 17:49:21,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-09-04 17:49:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 333 transitions. [2020-09-04 17:49:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-09-04 17:49:21,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:21,889 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] [2020-09-04 17:49:21,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 17:49:21,890 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:21,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1792712395, now seen corresponding path program 31 times [2020-09-04 17:49:21,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:21,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782677267] [2020-09-04 17:49:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:21,901 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 17:49:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 17:49:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:49:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-04 17:49:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-04 17:49:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 17:49:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 17:49:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:49:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-09-04 17:49:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 17:49:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-09-04 17:49:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-04 17:49:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 17:49:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-09-04 17:49:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 17:49:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:49:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:49:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:49:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:49:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:49:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-04 17:49:23,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782677267] [2020-09-04 17:49:23,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:23,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-09-04 17:49:23,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307748396] [2020-09-04 17:49:23,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 17:49:23,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:23,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 17:49:23,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 17:49:23,209 INFO L87 Difference]: Start difference. First operand 322 states and 333 transitions. Second operand 45 states. [2020-09-04 17:49:26,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:26,233 INFO L93 Difference]: Finished difference Result 634 states and 708 transitions. [2020-09-04 17:49:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-04 17:49:26,234 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 348 [2020-09-04 17:49:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:26,236 INFO L225 Difference]: With dead ends: 634 [2020-09-04 17:49:26,237 INFO L226 Difference]: Without dead ends: 499 [2020-09-04 17:49:26,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2397, Invalid=5085, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 17:49:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-09-04 17:49:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 328. [2020-09-04 17:49:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-09-04 17:49:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 339 transitions. [2020-09-04 17:49:26,276 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 339 transitions. Word has length 348 [2020-09-04 17:49:26,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:26,276 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 339 transitions. [2020-09-04 17:49:26,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 17:49:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 339 transitions. [2020-09-04 17:49:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-09-04 17:49:26,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:26,279 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] [2020-09-04 17:49:26,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 17:49:26,280 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:26,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:26,280 INFO L82 PathProgramCache]: Analyzing trace with hash -457332013, now seen corresponding path program 32 times [2020-09-04 17:49:26,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:26,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565478036] [2020-09-04 17:49:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:26,286 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 17:49:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:49:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-04 17:49:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-04 17:49:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 17:49:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 17:49:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 17:49:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 17:49:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-09-04 17:49:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 17:49:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:49:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-04 17:49:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:49:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 17:49:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:49:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:49:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:49:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:49:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:49:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:49:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-04 17:49:26,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565478036] [2020-09-04 17:49:26,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:26,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-09-04 17:49:26,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635720162] [2020-09-04 17:49:26,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-04 17:49:26,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:26,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-04 17:49:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-09-04 17:49:26,945 INFO L87 Difference]: Start difference. First operand 328 states and 339 transitions. Second operand 26 states. [2020-09-04 17:49:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:27,283 INFO L93 Difference]: Finished difference Result 351 states and 363 transitions. [2020-09-04 17:49:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 17:49:27,283 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 354 [2020-09-04 17:49:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:27,285 INFO L225 Difference]: With dead ends: 351 [2020-09-04 17:49:27,286 INFO L226 Difference]: Without dead ends: 349 [2020-09-04 17:49:27,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2020-09-04 17:49:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-04 17:49:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 344. [2020-09-04 17:49:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-09-04 17:49:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 356 transitions. [2020-09-04 17:49:27,328 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 356 transitions. Word has length 354 [2020-09-04 17:49:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:27,328 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 356 transitions. [2020-09-04 17:49:27,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-04 17:49:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 356 transitions. [2020-09-04 17:49:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-09-04 17:49:27,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:27,332 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 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] [2020-09-04 17:49:27,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 17:49:27,332 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash 702494447, now seen corresponding path program 33 times [2020-09-04 17:49:27,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:27,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902717467] [2020-09-04 17:49:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:27,343 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 17:49:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:49:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-04 17:49:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-04 17:49:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 17:49:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 17:49:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 17:49:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 17:49:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-09-04 17:49:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 17:49:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:49:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-04 17:49:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:49:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 17:49:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:49:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:49:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:49:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:49:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:49:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:49:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 17:49:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 17:49:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-04 17:49:28,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902717467] [2020-09-04 17:49:28,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:28,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2020-09-04 17:49:28,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870167171] [2020-09-04 17:49:28,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-09-04 17:49:28,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-09-04 17:49:28,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 17:49:28,910 INFO L87 Difference]: Start difference. First operand 344 states and 356 transitions. Second operand 48 states. [2020-09-04 17:49:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:32,400 INFO L93 Difference]: Finished difference Result 676 states and 754 transitions. [2020-09-04 17:49:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-09-04 17:49:32,400 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 374 [2020-09-04 17:49:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:32,403 INFO L225 Difference]: With dead ends: 676 [2020-09-04 17:49:32,404 INFO L226 Difference]: Without dead ends: 529 [2020-09-04 17:49:32,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2645, Invalid=5727, Unknown=0, NotChecked=0, Total=8372 [2020-09-04 17:49:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-09-04 17:49:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 350. [2020-09-04 17:49:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-09-04 17:49:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 362 transitions. [2020-09-04 17:49:32,440 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 362 transitions. Word has length 374 [2020-09-04 17:49:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:32,441 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 362 transitions. [2020-09-04 17:49:32,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-09-04 17:49:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 362 transitions. [2020-09-04 17:49:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-04 17:49:32,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:32,444 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] [2020-09-04 17:49:32,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 17:49:32,444 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:32,444 INFO L82 PathProgramCache]: Analyzing trace with hash -715929353, now seen corresponding path program 34 times [2020-09-04 17:49:32,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:32,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267587036] [2020-09-04 17:49:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:32,453 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-04 17:49:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 17:49:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 17:49:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:49:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:49:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-04 17:49:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-04 17:49:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-04 17:49:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-04 17:49:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 17:49:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 17:49:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 17:49:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:49:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:49:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-04 17:49:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:49:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:49:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:49:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:49:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:49:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:49:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:49:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-04 17:49:34,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267587036] [2020-09-04 17:49:34,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:34,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-09-04 17:49:34,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068961208] [2020-09-04 17:49:34,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-09-04 17:49:34,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-09-04 17:49:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 17:49:34,149 INFO L87 Difference]: Start difference. First operand 350 states and 362 transitions. Second operand 49 states. [2020-09-04 17:49:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:37,944 INFO L93 Difference]: Finished difference Result 690 states and 771 transitions. [2020-09-04 17:49:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-09-04 17:49:37,944 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 380 [2020-09-04 17:49:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:37,948 INFO L225 Difference]: With dead ends: 690 [2020-09-04 17:49:37,948 INFO L226 Difference]: Without dead ends: 543 [2020-09-04 17:49:37,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2855, Invalid=6075, Unknown=0, NotChecked=0, Total=8930 [2020-09-04 17:49:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-09-04 17:49:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 356. [2020-09-04 17:49:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-09-04 17:49:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 368 transitions. [2020-09-04 17:49:37,999 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 368 transitions. Word has length 380 [2020-09-04 17:49:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:37,999 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 368 transitions. [2020-09-04 17:49:37,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-09-04 17:49:38,000 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 368 transitions. [2020-09-04 17:49:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-09-04 17:49:38,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:38,002 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] [2020-09-04 17:49:38,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 17:49:38,003 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:38,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:38,003 INFO L82 PathProgramCache]: Analyzing trace with hash 247772415, now seen corresponding path program 35 times [2020-09-04 17:49:38,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:38,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276942892] [2020-09-04 17:49:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:38,017 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 17:49:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 17:49:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 17:49:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:49:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-04 17:49:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 17:49:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:49:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:49:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-09-04 17:49:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-09-04 17:49:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-09-04 17:49:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-09-04 17:49:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:49:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:49:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:49:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:49:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:49:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:49:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:49:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:49:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:49:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:49:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-04 17:49:38,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276942892] [2020-09-04 17:49:38,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:38,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-09-04 17:49:38,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209088435] [2020-09-04 17:49:38,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-04 17:49:38,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:38,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-04 17:49:38,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-09-04 17:49:38,819 INFO L87 Difference]: Start difference. First operand 356 states and 368 transitions. Second operand 28 states. [2020-09-04 17:49:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:39,186 INFO L93 Difference]: Finished difference Result 379 states and 392 transitions. [2020-09-04 17:49:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 17:49:39,186 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 386 [2020-09-04 17:49:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:39,190 INFO L225 Difference]: With dead ends: 379 [2020-09-04 17:49:39,190 INFO L226 Difference]: Without dead ends: 377 [2020-09-04 17:49:39,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2020-09-04 17:49:39,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-04 17:49:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 372. [2020-09-04 17:49:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-09-04 17:49:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 385 transitions. [2020-09-04 17:49:39,229 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 385 transitions. Word has length 386 [2020-09-04 17:49:39,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:39,230 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 385 transitions. [2020-09-04 17:49:39,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-04 17:49:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 385 transitions. [2020-09-04 17:49:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-09-04 17:49:39,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:39,233 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 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] [2020-09-04 17:49:39,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 17:49:39,234 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash 776434459, now seen corresponding path program 36 times [2020-09-04 17:49:39,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:39,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775636755] [2020-09-04 17:49:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:39,244 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 17:49:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 17:49:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 17:49:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:49:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-04 17:49:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 17:49:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:49:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:49:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-09-04 17:49:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-09-04 17:49:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-09-04 17:49:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-09-04 17:49:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:49:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:49:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:49:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:49:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:49:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:49:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:49:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:49:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:49:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:49:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-04 17:49:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-09-04 17:49:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 17:49:41,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775636755] [2020-09-04 17:49:41,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:41,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2020-09-04 17:49:41,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402088142] [2020-09-04 17:49:41,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-09-04 17:49:41,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:41,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-09-04 17:49:41,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2020-09-04 17:49:41,256 INFO L87 Difference]: Start difference. First operand 372 states and 385 transitions. Second operand 52 states. [2020-09-04 17:49:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:45,130 INFO L93 Difference]: Finished difference Result 732 states and 817 transitions. [2020-09-04 17:49:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-09-04 17:49:45,131 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 406 [2020-09-04 17:49:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:45,134 INFO L225 Difference]: With dead ends: 732 [2020-09-04 17:49:45,134 INFO L226 Difference]: Without dead ends: 573 [2020-09-04 17:49:45,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3125, Invalid=6775, Unknown=0, NotChecked=0, Total=9900 [2020-09-04 17:49:45,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-09-04 17:49:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 378. [2020-09-04 17:49:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-09-04 17:49:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 391 transitions. [2020-09-04 17:49:45,182 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 391 transitions. Word has length 406 [2020-09-04 17:49:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:45,182 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 391 transitions. [2020-09-04 17:49:45,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-09-04 17:49:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 391 transitions. [2020-09-04 17:49:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-09-04 17:49:45,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:45,186 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] [2020-09-04 17:49:45,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 17:49:45,186 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash 28435747, now seen corresponding path program 37 times [2020-09-04 17:49:45,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:45,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553037499] [2020-09-04 17:49:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:45,191 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 17:49:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:49:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 17:49:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-04 17:49:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-04 17:49:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-09-04 17:49:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 17:49:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 17:49:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 17:49:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 17:49:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:49:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:49:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:49:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:49:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:49:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:49:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:49:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:49:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:49:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:49:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:49:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:49:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:49:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:49:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 17:49:47,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553037499] [2020-09-04 17:49:47,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:47,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-09-04 17:49:47,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360852762] [2020-09-04 17:49:47,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-04 17:49:47,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:47,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-04 17:49:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 17:49:47,076 INFO L87 Difference]: Start difference. First operand 378 states and 391 transitions. Second operand 53 states. [2020-09-04 17:49:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:51,583 INFO L93 Difference]: Finished difference Result 746 states and 834 transitions. [2020-09-04 17:49:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-09-04 17:49:51,583 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 412 [2020-09-04 17:49:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:51,585 INFO L225 Difference]: With dead ends: 746 [2020-09-04 17:49:51,586 INFO L226 Difference]: Without dead ends: 587 [2020-09-04 17:49:51,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3353, Invalid=7153, Unknown=0, NotChecked=0, Total=10506 [2020-09-04 17:49:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-09-04 17:49:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 384. [2020-09-04 17:49:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-09-04 17:49:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 397 transitions. [2020-09-04 17:49:51,626 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 397 transitions. Word has length 412 [2020-09-04 17:49:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:51,626 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 397 transitions. [2020-09-04 17:49:51,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-04 17:49:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 397 transitions. [2020-09-04 17:49:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-04 17:49:51,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:51,630 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] [2020-09-04 17:49:51,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 17:49:51,631 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:51,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1261482283, now seen corresponding path program 38 times [2020-09-04 17:49:51,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:51,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544097087] [2020-09-04 17:49:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:51,636 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-04 17:49:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-04 17:49:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 17:49:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 17:49:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:49:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-09-04 17:49:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 17:49:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-09-04 17:49:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-04 17:49:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 17:49:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-09-04 17:49:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 17:49:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:49:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:49:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:49:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:49:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:49:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 17:49:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 17:49:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 17:49:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 17:49:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 17:49:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:49:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 17:49:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 17:49:52,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544097087] [2020-09-04 17:49:52,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:52,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-09-04 17:49:52,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183505067] [2020-09-04 17:49:52,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-04 17:49:52,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:52,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-04 17:49:52,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-09-04 17:49:52,569 INFO L87 Difference]: Start difference. First operand 384 states and 397 transitions. Second operand 30 states. [2020-09-04 17:49:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:52,982 INFO L93 Difference]: Finished difference Result 407 states and 421 transitions. [2020-09-04 17:49:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-04 17:49:52,983 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 418 [2020-09-04 17:49:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:52,986 INFO L225 Difference]: With dead ends: 407 [2020-09-04 17:49:52,987 INFO L226 Difference]: Without dead ends: 405 [2020-09-04 17:49:52,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2020-09-04 17:49:52,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-09-04 17:49:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 400. [2020-09-04 17:49:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-09-04 17:49:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 414 transitions. [2020-09-04 17:49:53,052 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 414 transitions. Word has length 418 [2020-09-04 17:49:53,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:53,054 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 414 transitions. [2020-09-04 17:49:53,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-04 17:49:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 414 transitions. [2020-09-04 17:49:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-09-04 17:49:53,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:53,059 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 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] [2020-09-04 17:49:53,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 17:49:53,059 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:53,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1020812985, now seen corresponding path program 39 times [2020-09-04 17:49:53,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:53,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075833418] [2020-09-04 17:49:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:53,067 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-04 17:49:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-04 17:49:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 17:49:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 17:49:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:49:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-09-04 17:49:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 17:49:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-09-04 17:49:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-04 17:49:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 17:49:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-09-04 17:49:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 17:49:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:49:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:49:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:49:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:49:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:49:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 17:49:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 17:49:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 17:49:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 17:49:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 17:49:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:49:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 17:49:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-09-04 17:49:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-09-04 17:49:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-04 17:49:55,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075833418] [2020-09-04 17:49:55,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:55,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2020-09-04 17:49:55,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679443591] [2020-09-04 17:49:55,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-09-04 17:49:55,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:55,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-09-04 17:49:55,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2020-09-04 17:49:55,241 INFO L87 Difference]: Start difference. First operand 400 states and 414 transitions. Second operand 56 states. [2020-09-04 17:50:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:00,081 INFO L93 Difference]: Finished difference Result 788 states and 880 transitions. [2020-09-04 17:50:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-09-04 17:50:00,082 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 438 [2020-09-04 17:50:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:00,085 INFO L225 Difference]: With dead ends: 788 [2020-09-04 17:50:00,086 INFO L226 Difference]: Without dead ends: 617 [2020-09-04 17:50:00,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3645, Invalid=7911, Unknown=0, NotChecked=0, Total=11556 [2020-09-04 17:50:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-09-04 17:50:00,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 406. [2020-09-04 17:50:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-09-04 17:50:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 420 transitions. [2020-09-04 17:50:00,147 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 420 transitions. Word has length 438 [2020-09-04 17:50:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:00,148 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 420 transitions. [2020-09-04 17:50:00,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-09-04 17:50:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 420 transitions. [2020-09-04 17:50:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-09-04 17:50:00,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:00,154 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] [2020-09-04 17:50:00,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 17:50:00,154 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1862792015, now seen corresponding path program 40 times [2020-09-04 17:50:00,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:00,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435064899] [2020-09-04 17:50:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:00,167 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-04 17:50:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 17:50:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 17:50:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 17:50:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 17:50:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-09-04 17:50:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 17:50:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:50:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-04 17:50:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:50:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 17:50:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:50:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:50:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:50:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:50:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:50:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:50:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 17:50:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 17:50:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-09-04 17:50:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-09-04 17:50:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 17:50:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-09-04 17:50:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-09-04 17:50:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-09-04 17:50:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:50:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-04 17:50:02,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435064899] [2020-09-04 17:50:02,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:02,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-09-04 17:50:02,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836960702] [2020-09-04 17:50:02,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-09-04 17:50:02,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-09-04 17:50:02,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=2379, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 17:50:02,715 INFO L87 Difference]: Start difference. First operand 406 states and 420 transitions. Second operand 57 states. [2020-09-04 17:50:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:07,993 INFO L93 Difference]: Finished difference Result 802 states and 897 transitions. [2020-09-04 17:50:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-09-04 17:50:07,993 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 444 [2020-09-04 17:50:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:07,996 INFO L225 Difference]: With dead ends: 802 [2020-09-04 17:50:07,996 INFO L226 Difference]: Without dead ends: 631 [2020-09-04 17:50:07,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3891, Invalid=8319, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 17:50:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-04 17:50:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 412. [2020-09-04 17:50:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-09-04 17:50:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 426 transitions. [2020-09-04 17:50:08,050 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 426 transitions. Word has length 444 [2020-09-04 17:50:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:08,051 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 426 transitions. [2020-09-04 17:50:08,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-09-04 17:50:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 426 transitions. [2020-09-04 17:50:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-09-04 17:50:08,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:08,054 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] [2020-09-04 17:50:08,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 17:50:08,054 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:08,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:08,055 INFO L82 PathProgramCache]: Analyzing trace with hash 420781911, now seen corresponding path program 41 times [2020-09-04 17:50:08,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:08,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981795798] [2020-09-04 17:50:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:08,061 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:50:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-04 17:50:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-04 17:50:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-04 17:50:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-04 17:50:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 17:50:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 17:50:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 17:50:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:50:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:50:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-04 17:50:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:50:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:50:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:50:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:50:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:50:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:50:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:50:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:50:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:50:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-09-04 17:50:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-09-04 17:50:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-09-04 17:50:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-04 17:50:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-09-04 17:50:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-04 17:50:09,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981795798] [2020-09-04 17:50:09,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:09,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-09-04 17:50:09,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386162779] [2020-09-04 17:50:09,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 17:50:09,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:09,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 17:50:09,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-09-04 17:50:09,142 INFO L87 Difference]: Start difference. First operand 412 states and 426 transitions. Second operand 32 states. [2020-09-04 17:50:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:09,621 INFO L93 Difference]: Finished difference Result 435 states and 450 transitions. [2020-09-04 17:50:09,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 17:50:09,622 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 450 [2020-09-04 17:50:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:09,625 INFO L225 Difference]: With dead ends: 435 [2020-09-04 17:50:09,625 INFO L226 Difference]: Without dead ends: 433 [2020-09-04 17:50:09,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=443, Invalid=613, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 17:50:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-09-04 17:50:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 428. [2020-09-04 17:50:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-04 17:50:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 443 transitions. [2020-09-04 17:50:09,678 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 443 transitions. Word has length 450 [2020-09-04 17:50:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:09,679 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 443 transitions. [2020-09-04 17:50:09,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 17:50:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 443 transitions. [2020-09-04 17:50:09,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-09-04 17:50:09,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:09,681 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 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] [2020-09-04 17:50:09,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-09-04 17:50:09,682 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:09,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:09,682 INFO L82 PathProgramCache]: Analyzing trace with hash 538100083, now seen corresponding path program 42 times [2020-09-04 17:50:09,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:09,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396135443] [2020-09-04 17:50:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:09,689 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:50:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-04 17:50:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-04 17:50:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-04 17:50:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-04 17:50:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 17:50:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 17:50:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 17:50:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:50:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:50:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-04 17:50:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:50:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:50:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:50:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:50:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:50:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:50:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:50:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:50:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:50:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-09-04 17:50:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-09-04 17:50:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-09-04 17:50:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-04 17:50:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-09-04 17:50:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-09-04 17:50:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-09-04 17:50:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-04 17:50:12,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396135443] [2020-09-04 17:50:12,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:12,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2020-09-04 17:50:12,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682455003] [2020-09-04 17:50:12,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-09-04 17:50:12,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:12,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-09-04 17:50:12,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2020-09-04 17:50:12,282 INFO L87 Difference]: Start difference. First operand 428 states and 443 transitions. Second operand 60 states. [2020-09-04 17:50:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:17,914 INFO L93 Difference]: Finished difference Result 844 states and 943 transitions. [2020-09-04 17:50:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-09-04 17:50:17,915 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 470 [2020-09-04 17:50:17,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:17,917 INFO L225 Difference]: With dead ends: 844 [2020-09-04 17:50:17,917 INFO L226 Difference]: Without dead ends: 661 [2020-09-04 17:50:17,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4205, Invalid=9135, Unknown=0, NotChecked=0, Total=13340 [2020-09-04 17:50:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-04 17:50:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 434. [2020-09-04 17:50:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-09-04 17:50:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 449 transitions. [2020-09-04 17:50:17,981 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 449 transitions. Word has length 470 [2020-09-04 17:50:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:17,982 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 449 transitions. [2020-09-04 17:50:17,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-09-04 17:50:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 449 transitions. [2020-09-04 17:50:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-09-04 17:50:17,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:17,986 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] [2020-09-04 17:50:17,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-09-04 17:50:17,987 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1424552827, now seen corresponding path program 43 times [2020-09-04 17:50:17,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:17,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209859164] [2020-09-04 17:50:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:17,998 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:50:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-04 17:50:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 17:50:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:50:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:50:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-09-04 17:50:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-09-04 17:50:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-09-04 17:50:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-09-04 17:50:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:50:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:50:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:50:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:50:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:50:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:50:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:50:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:50:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:50:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:50:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-04 17:50:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-09-04 17:50:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-09-04 17:50:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:50:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-09-04 17:50:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-09-04 17:50:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-09-04 17:50:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-09-04 17:50:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-09-04 17:50:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-04 17:50:20,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209859164] [2020-09-04 17:50:20,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:20,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-09-04 17:50:20,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187382847] [2020-09-04 17:50:20,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-09-04 17:50:20,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:20,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-09-04 17:50:20,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=2729, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 17:50:20,601 INFO L87 Difference]: Start difference. First operand 434 states and 449 transitions. Second operand 61 states. [2020-09-04 17:50:26,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:26,384 INFO L93 Difference]: Finished difference Result 858 states and 960 transitions. [2020-09-04 17:50:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-09-04 17:50:26,384 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 476 [2020-09-04 17:50:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:26,387 INFO L225 Difference]: With dead ends: 858 [2020-09-04 17:50:26,387 INFO L226 Difference]: Without dead ends: 675 [2020-09-04 17:50:26,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4469, Invalid=9573, Unknown=0, NotChecked=0, Total=14042 [2020-09-04 17:50:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-09-04 17:50:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 440. [2020-09-04 17:50:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-09-04 17:50:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 455 transitions. [2020-09-04 17:50:26,451 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 455 transitions. Word has length 476 [2020-09-04 17:50:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:26,452 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 455 transitions. [2020-09-04 17:50:26,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-09-04 17:50:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 455 transitions. [2020-09-04 17:50:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-09-04 17:50:26,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:26,457 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] [2020-09-04 17:50:26,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-09-04 17:50:26,457 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:26,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1341948029, now seen corresponding path program 44 times [2020-09-04 17:50:26,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:26,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19631077] [2020-09-04 17:50:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:26,463 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-04 17:50:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-04 17:50:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-09-04 17:50:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 17:50:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 17:50:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 17:50:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 17:50:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:50:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:50:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:50:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:50:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:50:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:50:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:50:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:50:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:50:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:50:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:50:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:50:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:50:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:50:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-09-04 17:50:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-04 17:50:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:50:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-09-04 17:50:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:50:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:50:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-04 17:50:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-04 17:50:27,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19631077] [2020-09-04 17:50:27,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:27,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-09-04 17:50:27,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856797701] [2020-09-04 17:50:27,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-04 17:50:27,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:27,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-04 17:50:27,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 17:50:27,705 INFO L87 Difference]: Start difference. First operand 440 states and 455 transitions. Second operand 34 states. [2020-09-04 17:50:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:28,227 INFO L93 Difference]: Finished difference Result 463 states and 479 transitions. [2020-09-04 17:50:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 17:50:28,229 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 482 [2020-09-04 17:50:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:28,235 INFO L225 Difference]: With dead ends: 463 [2020-09-04 17:50:28,236 INFO L226 Difference]: Without dead ends: 461 [2020-09-04 17:50:28,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 17:50:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-09-04 17:50:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 456. [2020-09-04 17:50:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-09-04 17:50:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 472 transitions. [2020-09-04 17:50:28,343 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 472 transitions. Word has length 482 [2020-09-04 17:50:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:28,344 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 472 transitions. [2020-09-04 17:50:28,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-04 17:50:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 472 transitions. [2020-09-04 17:50:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-09-04 17:50:28,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:28,352 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 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] [2020-09-04 17:50:28,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-04 17:50:28,352 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash -182725729, now seen corresponding path program 45 times [2020-09-04 17:50:28,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:28,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569560275] [2020-09-04 17:50:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:28,363 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-04 17:50:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-04 17:50:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-09-04 17:50:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 17:50:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 17:50:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 17:50:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 17:50:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:50:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:50:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:50:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:50:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:50:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:50:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:50:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:50:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:50:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:50:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:50:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:50:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:50:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:50:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-09-04 17:50:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-04 17:50:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:50:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-09-04 17:50:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:50:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:50:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-04 17:50:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-09-04 17:50:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-09-04 17:50:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-04 17:50:31,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569560275] [2020-09-04 17:50:31,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:31,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2020-09-04 17:50:31,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768439636] [2020-09-04 17:50:31,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-09-04 17:50:31,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:31,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-09-04 17:50:31,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2020-09-04 17:50:31,289 INFO L87 Difference]: Start difference. First operand 456 states and 472 transitions. Second operand 64 states. [2020-09-04 17:50:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:37,741 INFO L93 Difference]: Finished difference Result 900 states and 1006 transitions. [2020-09-04 17:50:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-09-04 17:50:37,742 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 502 [2020-09-04 17:50:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:37,745 INFO L225 Difference]: With dead ends: 900 [2020-09-04 17:50:37,745 INFO L226 Difference]: Without dead ends: 705 [2020-09-04 17:50:37,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1828 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4805, Invalid=10447, Unknown=0, NotChecked=0, Total=15252 [2020-09-04 17:50:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-04 17:50:37,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 462. [2020-09-04 17:50:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-09-04 17:50:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 478 transitions. [2020-09-04 17:50:37,823 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 478 transitions. Word has length 502 [2020-09-04 17:50:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:37,824 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 478 transitions. [2020-09-04 17:50:37,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-09-04 17:50:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 478 transitions. [2020-09-04 17:50:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-09-04 17:50:37,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:37,829 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] [2020-09-04 17:50:37,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-04 17:50:37,829 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:37,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:37,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1667753383, now seen corresponding path program 46 times [2020-09-04 17:50:37,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:37,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504988002] [2020-09-04 17:50:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:37,837 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 17:50:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:50:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-09-04 17:50:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 17:50:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-09-04 17:50:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-04 17:50:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 17:50:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-09-04 17:50:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 17:50:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:50:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:50:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:50:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:50:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:50:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 17:50:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 17:50:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 17:50:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 17:50:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 17:50:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:50:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 17:50:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-09-04 17:50:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-09-04 17:50:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-09-04 17:50:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 17:50:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-09-04 17:50:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-09-04 17:50:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-09-04 17:50:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 17:50:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-09-04 17:50:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-04 17:50:40,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504988002] [2020-09-04 17:50:40,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:40,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-09-04 17:50:40,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550128003] [2020-09-04 17:50:40,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-09-04 17:50:40,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:40,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-09-04 17:50:40,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1057, Invalid=3103, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 17:50:40,975 INFO L87 Difference]: Start difference. First operand 462 states and 478 transitions. Second operand 65 states. [2020-09-04 17:50:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:47,183 INFO L93 Difference]: Finished difference Result 914 states and 1023 transitions. [2020-09-04 17:50:47,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-09-04 17:50:47,183 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 508 [2020-09-04 17:50:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:47,187 INFO L225 Difference]: With dead ends: 914 [2020-09-04 17:50:47,187 INFO L226 Difference]: Without dead ends: 719 [2020-09-04 17:50:47,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5087, Invalid=10915, Unknown=0, NotChecked=0, Total=16002 [2020-09-04 17:50:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-09-04 17:50:47,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 468. [2020-09-04 17:50:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-09-04 17:50:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 484 transitions. [2020-09-04 17:50:47,258 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 484 transitions. Word has length 508 [2020-09-04 17:50:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:47,258 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 484 transitions. [2020-09-04 17:50:47,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-09-04 17:50:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 484 transitions. [2020-09-04 17:50:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-09-04 17:50:47,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:47,267 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] [2020-09-04 17:50:47,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-04 17:50:47,268 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1072672337, now seen corresponding path program 47 times [2020-09-04 17:50:47,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:47,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581414149] [2020-09-04 17:50:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:47,279 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 17:50:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 17:50:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-09-04 17:50:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 17:50:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:50:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-04 17:50:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:50:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 17:50:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:50:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:50:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:50:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:50:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:50:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:50:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 17:50:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 17:50:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-09-04 17:50:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-09-04 17:50:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 17:50:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-09-04 17:50:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-09-04 17:50:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-09-04 17:50:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:50:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-09-04 17:50:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-09-04 17:50:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-09-04 17:50:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-09-04 17:50:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-09-04 17:50:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-09-04 17:50:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-09-04 17:50:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-04 17:50:48,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581414149] [2020-09-04 17:50:48,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:48,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-09-04 17:50:48,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508367530] [2020-09-04 17:50:48,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-04 17:50:48,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:48,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-04 17:50:48,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 17:50:48,635 INFO L87 Difference]: Start difference. First operand 468 states and 484 transitions. Second operand 36 states. [2020-09-04 17:50:49,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:49,371 INFO L93 Difference]: Finished difference Result 491 states and 508 transitions. [2020-09-04 17:50:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-04 17:50:49,373 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 514 [2020-09-04 17:50:49,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:49,377 INFO L225 Difference]: With dead ends: 491 [2020-09-04 17:50:49,377 INFO L226 Difference]: Without dead ends: 489 [2020-09-04 17:50:49,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 17:50:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-09-04 17:50:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 484. [2020-09-04 17:50:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-09-04 17:50:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 501 transitions. [2020-09-04 17:50:49,452 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 501 transitions. Word has length 514 [2020-09-04 17:50:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:49,452 INFO L479 AbstractCegarLoop]: Abstraction has 484 states and 501 transitions. [2020-09-04 17:50:49,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-04 17:50:49,453 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 501 transitions. [2020-09-04 17:50:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-09-04 17:50:49,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:49,457 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 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] [2020-09-04 17:50:49,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-09-04 17:50:49,458 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:49,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:49,459 INFO L82 PathProgramCache]: Analyzing trace with hash 718657483, now seen corresponding path program 48 times [2020-09-04 17:50:49,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:49,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998074694] [2020-09-04 17:50:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:49,468 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 17:50:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 17:50:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-09-04 17:50:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 17:50:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:50:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-04 17:50:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:50:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 17:50:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:50:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:50:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:50:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:50:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:50:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:50:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 17:50:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 17:50:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-09-04 17:50:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-09-04 17:50:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 17:50:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-09-04 17:50:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-09-04 17:50:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-09-04 17:50:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:50:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-09-04 17:50:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-09-04 17:50:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-09-04 17:50:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-09-04 17:50:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-09-04 17:50:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-09-04 17:50:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-09-04 17:50:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2020-09-04 17:50:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-09-04 17:50:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-04 17:50:52,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998074694] [2020-09-04 17:50:52,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:52,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2020-09-04 17:50:52,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859356472] [2020-09-04 17:50:52,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-09-04 17:50:52,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:52,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-09-04 17:50:52,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2020-09-04 17:50:52,804 INFO L87 Difference]: Start difference. First operand 484 states and 501 transitions. Second operand 68 states. [2020-09-04 17:50:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:59,613 INFO L93 Difference]: Finished difference Result 956 states and 1069 transitions. [2020-09-04 17:50:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-09-04 17:50:59,614 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 534 [2020-09-04 17:50:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:59,618 INFO L225 Difference]: With dead ends: 956 [2020-09-04 17:50:59,618 INFO L226 Difference]: Without dead ends: 749 [2020-09-04 17:50:59,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5445, Invalid=11847, Unknown=0, NotChecked=0, Total=17292 [2020-09-04 17:50:59,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-09-04 17:50:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 490. [2020-09-04 17:50:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-04 17:50:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 507 transitions. [2020-09-04 17:50:59,692 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 507 transitions. Word has length 534 [2020-09-04 17:50:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:59,693 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 507 transitions. [2020-09-04 17:50:59,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-09-04 17:50:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 507 transitions. [2020-09-04 17:50:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-09-04 17:50:59,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:59,698 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] [2020-09-04 17:50:59,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-09-04 17:50:59,698 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2095593005, now seen corresponding path program 49 times [2020-09-04 17:50:59,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:59,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260125171] [2020-09-04 17:50:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:59,705 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-04 17:51:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-04 17:51:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-04 17:51:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 17:51:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 17:51:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 17:51:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:51:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:51:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-04 17:51:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:51:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:51:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:51:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:51:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:51:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:51:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:51:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:51:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:51:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-09-04 17:51:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-09-04 17:51:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-09-04 17:51:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-04 17:51:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-09-04 17:51:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-09-04 17:51:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-09-04 17:51:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:51:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-09-04 17:51:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-09-04 17:51:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-09-04 17:51:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-09-04 17:51:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-09-04 17:51:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-09-04 17:51:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-04 17:51:03,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260125171] [2020-09-04 17:51:03,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:03,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2020-09-04 17:51:03,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412679738] [2020-09-04 17:51:03,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-09-04 17:51:03,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:03,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-09-04 17:51:03,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=3501, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 17:51:03,356 INFO L87 Difference]: Start difference. First operand 490 states and 507 transitions. Second operand 69 states. [2020-09-04 17:51:10,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:10,871 INFO L93 Difference]: Finished difference Result 970 states and 1086 transitions. [2020-09-04 17:51:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-09-04 17:51:10,871 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 540 [2020-09-04 17:51:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:10,874 INFO L225 Difference]: With dead ends: 970 [2020-09-04 17:51:10,874 INFO L226 Difference]: Without dead ends: 763 [2020-09-04 17:51:10,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5745, Invalid=12345, Unknown=0, NotChecked=0, Total=18090 [2020-09-04 17:51:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-09-04 17:51:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 496. [2020-09-04 17:51:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-09-04 17:51:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 513 transitions. [2020-09-04 17:51:10,935 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 513 transitions. Word has length 540 [2020-09-04 17:51:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:10,935 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 513 transitions. [2020-09-04 17:51:10,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-09-04 17:51:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 513 transitions. [2020-09-04 17:51:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-09-04 17:51:10,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:10,940 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] [2020-09-04 17:51:10,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-09-04 17:51:10,941 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:10,941 INFO L82 PathProgramCache]: Analyzing trace with hash 835589595, now seen corresponding path program 50 times [2020-09-04 17:51:10,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:10,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535124210] [2020-09-04 17:51:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:10,949 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:51:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-09-04 17:51:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-09-04 17:51:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-09-04 17:51:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-09-04 17:51:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:51:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:51:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:51:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:51:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:51:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:51:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:51:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:51:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:51:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:51:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-04 17:51:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-09-04 17:51:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-09-04 17:51:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:51:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-09-04 17:51:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-09-04 17:51:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-09-04 17:51:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-09-04 17:51:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-09-04 17:51:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-09-04 17:51:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-09-04 17:51:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-09-04 17:51:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 17:51:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-09-04 17:51:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2020-09-04 17:51:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-09-04 17:51:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-04 17:51:12,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535124210] [2020-09-04 17:51:12,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:12,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-09-04 17:51:12,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783552484] [2020-09-04 17:51:12,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-04 17:51:12,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:12,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-04 17:51:12,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 17:51:12,704 INFO L87 Difference]: Start difference. First operand 496 states and 513 transitions. Second operand 38 states. [2020-09-04 17:51:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:13,425 INFO L93 Difference]: Finished difference Result 519 states and 537 transitions. [2020-09-04 17:51:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 17:51:13,426 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 546 [2020-09-04 17:51:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:13,429 INFO L225 Difference]: With dead ends: 519 [2020-09-04 17:51:13,429 INFO L226 Difference]: Without dead ends: 517 [2020-09-04 17:51:13,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=638, Invalid=844, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 17:51:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-09-04 17:51:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 512. [2020-09-04 17:51:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-09-04 17:51:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 530 transitions. [2020-09-04 17:51:13,485 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 530 transitions. Word has length 546 [2020-09-04 17:51:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:13,485 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 530 transitions. [2020-09-04 17:51:13,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-04 17:51:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 530 transitions. [2020-09-04 17:51:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-09-04 17:51:13,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:13,490 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 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] [2020-09-04 17:51:13,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-04 17:51:13,491 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1571566089, now seen corresponding path program 51 times [2020-09-04 17:51:13,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:13,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737861675] [2020-09-04 17:51:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:13,503 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:51:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-09-04 17:51:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-09-04 17:51:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-09-04 17:51:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-09-04 17:51:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:51:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:51:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:51:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:51:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:51:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:51:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:51:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:51:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:51:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:51:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-04 17:51:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-09-04 17:51:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-09-04 17:51:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:51:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-09-04 17:51:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-09-04 17:51:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-09-04 17:51:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-09-04 17:51:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-09-04 17:51:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-09-04 17:51:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-09-04 17:51:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-09-04 17:51:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 17:51:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-09-04 17:51:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2020-09-04 17:51:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-09-04 17:51:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2020-09-04 17:51:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2020-09-04 17:51:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-04 17:51:17,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737861675] [2020-09-04 17:51:17,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:17,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2020-09-04 17:51:17,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389908025] [2020-09-04 17:51:17,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-09-04 17:51:17,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:17,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-09-04 17:51:17,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 17:51:17,694 INFO L87 Difference]: Start difference. First operand 512 states and 530 transitions. Second operand 72 states. [2020-09-04 17:51:25,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:25,637 INFO L93 Difference]: Finished difference Result 1012 states and 1132 transitions. [2020-09-04 17:51:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-09-04 17:51:25,643 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 566 [2020-09-04 17:51:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:25,648 INFO L225 Difference]: With dead ends: 1012 [2020-09-04 17:51:25,648 INFO L226 Difference]: Without dead ends: 793 [2020-09-04 17:51:25,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=6125, Invalid=13335, Unknown=0, NotChecked=0, Total=19460 [2020-09-04 17:51:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-09-04 17:51:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 518. [2020-09-04 17:51:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-09-04 17:51:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 536 transitions. [2020-09-04 17:51:25,716 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 536 transitions. Word has length 566 [2020-09-04 17:51:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:25,717 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 536 transitions. [2020-09-04 17:51:25,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-09-04 17:51:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 536 transitions. [2020-09-04 17:51:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-09-04 17:51:25,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:25,722 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] [2020-09-04 17:51:25,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-04 17:51:25,722 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:25,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1794400257, now seen corresponding path program 52 times [2020-09-04 17:51:25,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:25,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131113502] [2020-09-04 17:51:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:25,730 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 17:51:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 17:51:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 17:51:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 17:51:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:51:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:51:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:51:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:51:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:51:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:51:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:51:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:51:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:51:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:51:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:51:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:51:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:51:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:51:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-09-04 17:51:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-04 17:51:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:51:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-09-04 17:51:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:51:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:51:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-04 17:51:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-09-04 17:51:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-09-04 17:51:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-09-04 17:51:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-09-04 17:51:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-09-04 17:51:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2020-09-04 17:51:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-09-04 17:51:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-09-04 17:51:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-09-04 17:51:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-04 17:51:30,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131113502] [2020-09-04 17:51:30,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:30,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2020-09-04 17:51:30,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392149967] [2020-09-04 17:51:30,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-09-04 17:51:30,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:30,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-09-04 17:51:30,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1333, Invalid=3923, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 17:51:30,090 INFO L87 Difference]: Start difference. First operand 518 states and 536 transitions. Second operand 73 states. [2020-09-04 17:51:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:38,521 INFO L93 Difference]: Finished difference Result 1026 states and 1149 transitions. [2020-09-04 17:51:38,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-09-04 17:51:38,521 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 572 [2020-09-04 17:51:38,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:38,524 INFO L225 Difference]: With dead ends: 1026 [2020-09-04 17:51:38,525 INFO L226 Difference]: Without dead ends: 807 [2020-09-04 17:51:38,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2380 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=6443, Invalid=13863, Unknown=0, NotChecked=0, Total=20306 [2020-09-04 17:51:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-09-04 17:51:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 524. [2020-09-04 17:51:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-09-04 17:51:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 542 transitions. [2020-09-04 17:51:38,582 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 542 transitions. Word has length 572 [2020-09-04 17:51:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:38,582 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 542 transitions. [2020-09-04 17:51:38,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-09-04 17:51:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 542 transitions. [2020-09-04 17:51:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-09-04 17:51:38,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:38,586 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] [2020-09-04 17:51:38,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-04 17:51:38,587 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:38,587 INFO L82 PathProgramCache]: Analyzing trace with hash -430978041, now seen corresponding path program 53 times [2020-09-04 17:51:38,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:38,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905597506] [2020-09-04 17:51:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:38,593 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 17:51:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-09-04 17:51:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-04 17:51:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 17:51:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-09-04 17:51:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 17:51:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:51:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:51:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:51:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:51:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:51:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 17:51:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 17:51:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 17:51:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 17:51:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 17:51:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:51:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 17:51:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-09-04 17:51:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-09-04 17:51:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-09-04 17:51:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 17:51:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-09-04 17:51:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-09-04 17:51:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-09-04 17:51:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 17:51:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-09-04 17:51:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-09-04 17:51:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-09-04 17:51:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2020-09-04 17:51:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-09-04 17:51:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2020-09-04 17:51:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-09-04 17:51:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2020-09-04 17:51:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-04 17:51:40,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905597506] [2020-09-04 17:51:40,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:40,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2020-09-04 17:51:40,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729891164] [2020-09-04 17:51:40,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-09-04 17:51:40,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:40,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-09-04 17:51:40,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 17:51:40,527 INFO L87 Difference]: Start difference. First operand 524 states and 542 transitions. Second operand 40 states. [2020-09-04 17:51:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:41,299 INFO L93 Difference]: Finished difference Result 547 states and 566 transitions. [2020-09-04 17:51:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 17:51:41,301 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 578 [2020-09-04 17:51:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:41,303 INFO L225 Difference]: With dead ends: 547 [2020-09-04 17:51:41,303 INFO L226 Difference]: Without dead ends: 545 [2020-09-04 17:51:41,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=711, Invalid=929, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 17:51:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-09-04 17:51:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 540. [2020-09-04 17:51:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-09-04 17:51:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 559 transitions. [2020-09-04 17:51:41,359 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 559 transitions. Word has length 578 [2020-09-04 17:51:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:41,360 INFO L479 AbstractCegarLoop]: Abstraction has 540 states and 559 transitions. [2020-09-04 17:51:41,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-09-04 17:51:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 559 transitions. [2020-09-04 17:51:41,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-09-04 17:51:41,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:41,365 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 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] [2020-09-04 17:51:41,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-09-04 17:51:41,366 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:41,366 INFO L82 PathProgramCache]: Analyzing trace with hash -181881309, now seen corresponding path program 54 times [2020-09-04 17:51:41,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:41,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562443805] [2020-09-04 17:51:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:41,377 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 17:51:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-09-04 17:51:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-04 17:51:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 17:51:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-09-04 17:51:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 17:51:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:51:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:51:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:51:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:51:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:51:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 17:51:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 17:51:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 17:51:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 17:51:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 17:51:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:51:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 17:51:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-09-04 17:51:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-09-04 17:51:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-09-04 17:51:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 17:51:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-09-04 17:51:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-09-04 17:51:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-09-04 17:51:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 17:51:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-09-04 17:51:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-09-04 17:51:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-09-04 17:51:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2020-09-04 17:51:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-09-04 17:51:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2020-09-04 17:51:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-09-04 17:51:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2020-09-04 17:51:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-09-04 17:51:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-09-04 17:51:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-04 17:51:46,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562443805] [2020-09-04 17:51:46,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:46,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2020-09-04 17:51:46,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729444111] [2020-09-04 17:51:46,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-09-04 17:51:46,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-09-04 17:51:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2020-09-04 17:51:46,063 INFO L87 Difference]: Start difference. First operand 540 states and 559 transitions. Second operand 76 states. [2020-09-04 17:51:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:55,822 INFO L93 Difference]: Finished difference Result 1068 states and 1195 transitions. [2020-09-04 17:51:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2020-09-04 17:51:55,823 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 598 [2020-09-04 17:51:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:55,829 INFO L225 Difference]: With dead ends: 1068 [2020-09-04 17:51:55,829 INFO L226 Difference]: Without dead ends: 837 [2020-09-04 17:51:55,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2626 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=6845, Invalid=14911, Unknown=0, NotChecked=0, Total=21756 [2020-09-04 17:51:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-04 17:51:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 546. [2020-09-04 17:51:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-09-04 17:51:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 565 transitions. [2020-09-04 17:51:55,889 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 565 transitions. Word has length 598 [2020-09-04 17:51:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:55,889 INFO L479 AbstractCegarLoop]: Abstraction has 546 states and 565 transitions. [2020-09-04 17:51:55,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-09-04 17:51:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 565 transitions. [2020-09-04 17:51:55,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2020-09-04 17:51:55,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:55,894 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] [2020-09-04 17:51:55,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-09-04 17:51:55,895 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:55,895 INFO L82 PathProgramCache]: Analyzing trace with hash 852912171, now seen corresponding path program 55 times [2020-09-04 17:51:55,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:55,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038092729] [2020-09-04 17:51:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:55,909 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 17:52:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:52:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-04 17:52:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:52:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 17:52:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:52:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:52:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:52:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:52:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:52:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:52:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 17:52:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 17:52:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-09-04 17:52:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-09-04 17:52:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 17:52:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-09-04 17:52:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-09-04 17:52:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-09-04 17:52:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:52:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-09-04 17:52:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-09-04 17:52:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-09-04 17:52:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-09-04 17:52:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-09-04 17:52:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-09-04 17:52:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-09-04 17:52:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2020-09-04 17:52:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-09-04 17:52:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2020-09-04 17:52:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-09-04 17:52:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-04 17:52:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2020-09-04 17:52:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2020-09-04 17:52:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2020-09-04 17:52:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-09-04 17:52:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-04 17:52:00,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038092729] [2020-09-04 17:52:00,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:00,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2020-09-04 17:52:00,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401626035] [2020-09-04 17:52:00,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-09-04 17:52:00,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:00,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-09-04 17:52:00,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=4369, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 17:52:00,951 INFO L87 Difference]: Start difference. First operand 546 states and 565 transitions. Second operand 77 states. [2020-09-04 17:52:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:12,142 INFO L93 Difference]: Finished difference Result 1082 states and 1212 transitions. [2020-09-04 17:52:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-09-04 17:52:12,142 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 604 [2020-09-04 17:52:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:12,163 INFO L225 Difference]: With dead ends: 1082 [2020-09-04 17:52:12,163 INFO L226 Difference]: Without dead ends: 851 [2020-09-04 17:52:12,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2664 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=7181, Invalid=15469, Unknown=0, NotChecked=0, Total=22650 [2020-09-04 17:52:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-09-04 17:52:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 552. [2020-09-04 17:52:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-09-04 17:52:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 571 transitions. [2020-09-04 17:52:12,245 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 571 transitions. Word has length 604 [2020-09-04 17:52:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:12,245 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 571 transitions. [2020-09-04 17:52:12,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-09-04 17:52:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 571 transitions. [2020-09-04 17:52:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-09-04 17:52:12,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:12,249 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] [2020-09-04 17:52:12,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-09-04 17:52:12,249 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:12,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:12,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1999139891, now seen corresponding path program 56 times [2020-09-04 17:52:12,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:12,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866228465] [2020-09-04 17:52:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:12,256 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 17:52:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 17:52:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 17:52:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:52:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:52:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-04 17:52:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:52:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:52:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:52:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:52:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:52:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:52:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:52:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:52:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:52:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-09-04 17:52:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-09-04 17:52:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-09-04 17:52:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-04 17:52:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-09-04 17:52:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-09-04 17:52:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-09-04 17:52:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:52:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-09-04 17:52:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-09-04 17:52:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-09-04 17:52:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-09-04 17:52:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-09-04 17:52:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-09-04 17:52:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2020-09-04 17:52:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2020-09-04 17:52:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-09-04 17:52:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-09-04 17:52:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-04 17:52:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2020-09-04 17:52:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-09-04 17:52:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-04 17:52:14,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866228465] [2020-09-04 17:52:14,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:14,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2020-09-04 17:52:14,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40880469] [2020-09-04 17:52:14,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-09-04 17:52:14,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:14,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-09-04 17:52:14,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=938, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 17:52:14,549 INFO L87 Difference]: Start difference. First operand 552 states and 571 transitions. Second operand 42 states. [2020-09-04 17:52:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:15,547 INFO L93 Difference]: Finished difference Result 575 states and 595 transitions. [2020-09-04 17:52:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-04 17:52:15,549 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 610 [2020-09-04 17:52:15,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:15,552 INFO L225 Difference]: With dead ends: 575 [2020-09-04 17:52:15,552 INFO L226 Difference]: Without dead ends: 573 [2020-09-04 17:52:15,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=788, Invalid=1018, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 17:52:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-09-04 17:52:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 568. [2020-09-04 17:52:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-09-04 17:52:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 588 transitions. [2020-09-04 17:52:15,615 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 588 transitions. Word has length 610 [2020-09-04 17:52:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:15,616 INFO L479 AbstractCegarLoop]: Abstraction has 568 states and 588 transitions. [2020-09-04 17:52:15,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-09-04 17:52:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 588 transitions. [2020-09-04 17:52:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-09-04 17:52:15,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:15,620 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 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] [2020-09-04 17:52:15,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-09-04 17:52:15,620 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:15,620 INFO L82 PathProgramCache]: Analyzing trace with hash 895979599, now seen corresponding path program 57 times [2020-09-04 17:52:15,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:15,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327968760] [2020-09-04 17:52:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:15,631 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 17:52:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:20,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 17:52:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 17:52:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:52:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:52:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-04 17:52:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:20,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:52:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:52:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:52:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:52:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:52:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:52:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:52:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:52:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:52:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-09-04 17:52:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-09-04 17:52:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-09-04 17:52:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-04 17:52:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-09-04 17:52:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-09-04 17:52:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-09-04 17:52:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:52:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-09-04 17:52:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-09-04 17:52:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-09-04 17:52:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-09-04 17:52:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-09-04 17:52:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-09-04 17:52:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2020-09-04 17:52:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2020-09-04 17:52:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-09-04 17:52:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-09-04 17:52:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-04 17:52:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2020-09-04 17:52:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-09-04 17:52:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2020-09-04 17:52:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-09-04 17:52:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-04 17:52:21,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327968760] [2020-09-04 17:52:21,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:21,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2020-09-04 17:52:21,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187722934] [2020-09-04 17:52:21,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-09-04 17:52:21,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:21,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-09-04 17:52:21,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2020-09-04 17:52:21,328 INFO L87 Difference]: Start difference. First operand 568 states and 588 transitions. Second operand 80 states. [2020-09-04 17:52:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:32,832 INFO L93 Difference]: Finished difference Result 1124 states and 1258 transitions. [2020-09-04 17:52:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2020-09-04 17:52:32,833 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 630 [2020-09-04 17:52:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:32,838 INFO L225 Difference]: With dead ends: 1124 [2020-09-04 17:52:32,838 INFO L226 Difference]: Without dead ends: 881 [2020-09-04 17:52:32,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2924 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=7605, Invalid=16575, Unknown=0, NotChecked=0, Total=24180 [2020-09-04 17:52:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-09-04 17:52:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 574. [2020-09-04 17:52:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-09-04 17:52:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 594 transitions. [2020-09-04 17:52:32,905 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 594 transitions. Word has length 630 [2020-09-04 17:52:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:32,905 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 594 transitions. [2020-09-04 17:52:32,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-09-04 17:52:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 594 transitions. [2020-09-04 17:52:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-09-04 17:52:32,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:32,909 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] [2020-09-04 17:52:32,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-09-04 17:52:32,909 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:32,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1854612055, now seen corresponding path program 58 times [2020-09-04 17:52:32,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:32,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739500940] [2020-09-04 17:52:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:32,915 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-09-04 17:52:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-09-04 17:52:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-09-04 17:52:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:52:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:52:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:52:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:52:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:52:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:52:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:52:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:52:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:52:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:52:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-04 17:52:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-09-04 17:52:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-09-04 17:52:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:52:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-09-04 17:52:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-09-04 17:52:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-09-04 17:52:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-09-04 17:52:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-09-04 17:52:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-09-04 17:52:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-09-04 17:52:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-09-04 17:52:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 17:52:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-09-04 17:52:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2020-09-04 17:52:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-09-04 17:52:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2020-09-04 17:52:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2020-09-04 17:52:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-09-04 17:52:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-09-04 17:52:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-09-04 17:52:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2020-09-04 17:52:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-09-04 17:52:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-09-04 17:52:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2020-09-04 17:52:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-04 17:52:38,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739500940] [2020-09-04 17:52:38,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:38,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2020-09-04 17:52:38,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960817690] [2020-09-04 17:52:38,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-09-04 17:52:38,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:38,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-09-04 17:52:38,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1641, Invalid=4839, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 17:52:38,885 INFO L87 Difference]: Start difference. First operand 574 states and 594 transitions. Second operand 81 states. [2020-09-04 17:52:52,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:52,079 INFO L93 Difference]: Finished difference Result 1138 states and 1275 transitions. [2020-09-04 17:52:52,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2020-09-04 17:52:52,080 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 636 [2020-09-04 17:52:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:52,084 INFO L225 Difference]: With dead ends: 1138 [2020-09-04 17:52:52,084 INFO L226 Difference]: Without dead ends: 895 [2020-09-04 17:52:52,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2964 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=7959, Invalid=17163, Unknown=0, NotChecked=0, Total=25122 [2020-09-04 17:52:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-09-04 17:52:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 580. [2020-09-04 17:52:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-04 17:52:52,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 600 transitions. [2020-09-04 17:52:52,156 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 600 transitions. Word has length 636 [2020-09-04 17:52:52,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:52,156 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 600 transitions. [2020-09-04 17:52:52,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-09-04 17:52:52,156 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 600 transitions. [2020-09-04 17:52:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2020-09-04 17:52:52,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:52,160 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] [2020-09-04 17:52:52,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-09-04 17:52:52,161 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:52,161 INFO L82 PathProgramCache]: Analyzing trace with hash -160756129, now seen corresponding path program 59 times [2020-09-04 17:52:52,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:52,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596591138] [2020-09-04 17:52:52,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:52,166 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 17:52:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:52:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:52:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:52:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:52:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:52:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:52:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:52:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:52:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:52:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:52:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:52:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:52:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:52:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:52:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-09-04 17:52:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-04 17:52:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:52:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-09-04 17:52:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:52:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:52:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-04 17:52:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-09-04 17:52:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-09-04 17:52:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-09-04 17:52:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-09-04 17:52:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-09-04 17:52:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2020-09-04 17:52:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-09-04 17:52:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-09-04 17:52:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-09-04 17:52:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-09-04 17:52:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2020-09-04 17:52:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2020-09-04 17:52:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2020-09-04 17:52:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-09-04 17:52:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2020-09-04 17:52:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2020-09-04 17:52:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-04 17:52:54,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596591138] [2020-09-04 17:52:54,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:54,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-09-04 17:52:54,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28166359] [2020-09-04 17:52:54,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-09-04 17:52:54,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:54,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-09-04 17:52:54,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=1027, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 17:52:54,972 INFO L87 Difference]: Start difference. First operand 580 states and 600 transitions. Second operand 44 states. [2020-09-04 17:52:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:56,152 INFO L93 Difference]: Finished difference Result 603 states and 624 transitions. [2020-09-04 17:52:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 17:52:56,155 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 642 [2020-09-04 17:52:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:56,158 INFO L225 Difference]: With dead ends: 603 [2020-09-04 17:52:56,159 INFO L226 Difference]: Without dead ends: 601 [2020-09-04 17:52:56,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=869, Invalid=1111, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 17:52:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-09-04 17:52:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 596. [2020-09-04 17:52:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-09-04 17:52:56,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 617 transitions. [2020-09-04 17:52:56,230 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 617 transitions. Word has length 642 [2020-09-04 17:52:56,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:56,231 INFO L479 AbstractCegarLoop]: Abstraction has 596 states and 617 transitions. [2020-09-04 17:52:56,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-09-04 17:52:56,231 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 617 transitions. [2020-09-04 17:52:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2020-09-04 17:52:56,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:56,235 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 40, 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] [2020-09-04 17:52:56,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-09-04 17:52:56,235 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:56,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:56,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1381802885, now seen corresponding path program 60 times [2020-09-04 17:52:56,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:56,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697099468] [2020-09-04 17:52:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:56,242 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:53:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 17:53:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:53:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:53:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:53:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:53:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:53:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:53:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:53:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:53:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:53:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:53:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:53:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:53:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:53:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:53:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-09-04 17:53:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-04 17:53:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:53:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-09-04 17:53:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:53:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:53:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-04 17:53:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-09-04 17:53:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-09-04 17:53:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-09-04 17:53:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-09-04 17:53:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-09-04 17:53:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2020-09-04 17:53:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-09-04 17:53:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-09-04 17:53:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-09-04 17:53:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-09-04 17:53:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2020-09-04 17:53:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2020-09-04 17:53:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2020-09-04 17:53:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-09-04 17:53:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2020-09-04 17:53:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2020-09-04 17:53:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2020-09-04 17:53:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2020-09-04 17:53:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-04 17:53:04,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697099468] [2020-09-04 17:53:04,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:53:04,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2020-09-04 17:53:04,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200994602] [2020-09-04 17:53:04,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-09-04 17:53:04,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:53:04,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-09-04 17:53:04,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2020-09-04 17:53:04,009 INFO L87 Difference]: Start difference. First operand 596 states and 617 transitions. Second operand 84 states. [2020-09-04 17:53:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:53:18,921 INFO L93 Difference]: Finished difference Result 1180 states and 1321 transitions. [2020-09-04 17:53:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2020-09-04 17:53:18,924 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 662 [2020-09-04 17:53:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:53:18,928 INFO L225 Difference]: With dead ends: 1180 [2020-09-04 17:53:18,928 INFO L226 Difference]: Without dead ends: 925 [2020-09-04 17:53:18,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3238 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=8405, Invalid=18327, Unknown=0, NotChecked=0, Total=26732 [2020-09-04 17:53:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-09-04 17:53:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 602. [2020-09-04 17:53:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-09-04 17:53:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 623 transitions. [2020-09-04 17:53:19,038 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 623 transitions. Word has length 662 [2020-09-04 17:53:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:53:19,038 INFO L479 AbstractCegarLoop]: Abstraction has 602 states and 623 transitions. [2020-09-04 17:53:19,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-09-04 17:53:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 623 transitions. [2020-09-04 17:53:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2020-09-04 17:53:19,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:53:19,042 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] [2020-09-04 17:53:19,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-09-04 17:53:19,043 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:53:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:53:19,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1833120125, now seen corresponding path program 61 times [2020-09-04 17:53:19,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:53:19,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221092946] [2020-09-04 17:53:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:53:19,050 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:53:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:53:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-09-04 17:53:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-09-04 17:53:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 17:53:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:53:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:53:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:53:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:53:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:53:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 17:53:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 17:53:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 17:53:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 17:53:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 17:53:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:53:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 17:53:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-09-04 17:53:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-09-04 17:53:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-09-04 17:53:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 17:53:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-09-04 17:53:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-09-04 17:53:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-09-04 17:53:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 17:53:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-09-04 17:53:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-09-04 17:53:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-09-04 17:53:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2020-09-04 17:53:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-09-04 17:53:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2020-09-04 17:53:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-09-04 17:53:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2020-09-04 17:53:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-09-04 17:53:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-09-04 17:53:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-09-04 17:53:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-09-04 17:53:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2020-09-04 17:53:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2020-09-04 17:53:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2020-09-04 17:53:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2020-09-04 17:53:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-09-04 17:53:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-04 17:53:27,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221092946] [2020-09-04 17:53:27,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:53:27,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2020-09-04 17:53:27,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561674562] [2020-09-04 17:53:27,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-09-04 17:53:27,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:53:27,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-09-04 17:53:27,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1807, Invalid=5333, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 17:53:27,554 INFO L87 Difference]: Start difference. First operand 602 states and 623 transitions. Second operand 85 states. [2020-09-04 17:53:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:53:44,436 INFO L93 Difference]: Finished difference Result 1194 states and 1338 transitions. [2020-09-04 17:53:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2020-09-04 17:53:44,436 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 668 [2020-09-04 17:53:44,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:53:44,441 INFO L225 Difference]: With dead ends: 1194 [2020-09-04 17:53:44,441 INFO L226 Difference]: Without dead ends: 939 [2020-09-04 17:53:44,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3280 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=8777, Invalid=18945, Unknown=0, NotChecked=0, Total=27722 [2020-09-04 17:53:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-09-04 17:53:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 608. [2020-09-04 17:53:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-09-04 17:53:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 629 transitions. [2020-09-04 17:53:44,526 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 629 transitions. Word has length 668 [2020-09-04 17:53:44,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:53:44,526 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 629 transitions. [2020-09-04 17:53:44,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-09-04 17:53:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 629 transitions. [2020-09-04 17:53:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2020-09-04 17:53:44,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:53:44,531 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] [2020-09-04 17:53:44,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-09-04 17:53:44,532 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:53:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:53:44,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1364551029, now seen corresponding path program 62 times [2020-09-04 17:53:44,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:53:44,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359646232] [2020-09-04 17:53:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:53:44,538 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:53:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:53:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:53:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 17:53:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:53:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:53:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:53:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:53:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:53:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:53:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 17:53:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 17:53:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-09-04 17:53:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-09-04 17:53:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 17:53:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-09-04 17:53:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-09-04 17:53:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-09-04 17:53:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:53:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-09-04 17:53:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-09-04 17:53:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-09-04 17:53:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-09-04 17:53:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-09-04 17:53:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-09-04 17:53:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-09-04 17:53:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2020-09-04 17:53:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-09-04 17:53:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2020-09-04 17:53:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-09-04 17:53:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-04 17:53:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2020-09-04 17:53:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2020-09-04 17:53:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2020-09-04 17:53:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-09-04 17:53:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2020-09-04 17:53:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2020-09-04 17:53:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-09-04 17:53:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-09-04 17:53:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-09-04 17:53:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2020-09-04 17:53:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2020-09-04 17:53:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-04 17:53:48,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359646232] [2020-09-04 17:53:48,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:53:48,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2020-09-04 17:53:48,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016120999] [2020-09-04 17:53:48,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-09-04 17:53:48,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:53:48,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-09-04 17:53:48,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=1120, Unknown=0, NotChecked=0, Total=2070 [2020-09-04 17:53:48,148 INFO L87 Difference]: Start difference. First operand 608 states and 629 transitions. Second operand 46 states. [2020-09-04 17:53:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:53:49,589 INFO L93 Difference]: Finished difference Result 631 states and 653 transitions. [2020-09-04 17:53:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 17:53:49,592 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 674 [2020-09-04 17:53:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:53:49,596 INFO L225 Difference]: With dead ends: 631 [2020-09-04 17:53:49,597 INFO L226 Difference]: Without dead ends: 629 [2020-09-04 17:53:49,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=954, Invalid=1208, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 17:53:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-09-04 17:53:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 624. [2020-09-04 17:53:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-09-04 17:53:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 646 transitions. [2020-09-04 17:53:49,675 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 646 transitions. Word has length 674 [2020-09-04 17:53:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:53:49,676 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 646 transitions. [2020-09-04 17:53:49,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-09-04 17:53:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 646 transitions. [2020-09-04 17:53:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2020-09-04 17:53:49,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:53:49,681 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 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] [2020-09-04 17:53:49,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-09-04 17:53:49,681 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:53:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:53:49,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1594942809, now seen corresponding path program 63 times [2020-09-04 17:53:49,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:53:49,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270832829] [2020-09-04 17:53:49,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:53:49,690 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:53:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:53:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-09-04 17:53:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 17:53:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:53:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:53:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:53:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:53:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:53:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:53:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 17:53:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 17:53:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-09-04 17:53:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-09-04 17:53:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 17:53:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-09-04 17:53:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-09-04 17:53:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-09-04 17:53:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:53:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-09-04 17:53:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-09-04 17:53:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-09-04 17:53:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-09-04 17:53:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-09-04 17:53:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-09-04 17:53:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-09-04 17:53:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2020-09-04 17:53:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-09-04 17:53:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2020-09-04 17:53:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-09-04 17:53:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-04 17:53:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2020-09-04 17:53:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2020-09-04 17:53:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2020-09-04 17:53:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-09-04 17:53:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2020-09-04 17:53:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2020-09-04 17:53:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-09-04 17:53:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-09-04 17:53:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-09-04 17:53:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2020-09-04 17:53:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2020-09-04 17:53:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-09-04 17:53:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2020-09-04 17:53:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-04 17:53:58,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270832829] [2020-09-04 17:53:58,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:53:58,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2020-09-04 17:53:58,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533517829] [2020-09-04 17:53:58,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-09-04 17:53:58,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:53:58,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-09-04 17:53:58,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2020-09-04 17:53:58,836 INFO L87 Difference]: Start difference. First operand 624 states and 646 transitions. Second operand 88 states. [2020-09-04 17:54:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:54:17,484 INFO L93 Difference]: Finished difference Result 1236 states and 1384 transitions. [2020-09-04 17:54:17,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2020-09-04 17:54:17,488 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 694 [2020-09-04 17:54:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:54:17,493 INFO L225 Difference]: With dead ends: 1236 [2020-09-04 17:54:17,493 INFO L226 Difference]: Without dead ends: 969 [2020-09-04 17:54:17,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3568 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=9245, Invalid=20167, Unknown=0, NotChecked=0, Total=29412 [2020-09-04 17:54:17,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-09-04 17:54:17,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 630. [2020-09-04 17:54:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-09-04 17:54:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 652 transitions. [2020-09-04 17:54:17,611 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 652 transitions. Word has length 694 [2020-09-04 17:54:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:54:17,612 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 652 transitions. [2020-09-04 17:54:17,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-09-04 17:54:17,612 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 652 transitions. [2020-09-04 17:54:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2020-09-04 17:54:17,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:54:17,619 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] [2020-09-04 17:54:17,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-09-04 17:54:17,619 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:54:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:54:17,620 INFO L82 PathProgramCache]: Analyzing trace with hash -495031121, now seen corresponding path program 64 times [2020-09-04 17:54:17,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:54:17,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376661357] [2020-09-04 17:54:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:54:17,627 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:54:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:54:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 17:54:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:54:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-04 17:54:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:54:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:54:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:54:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:54:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:54:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:54:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:54:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:54:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:54:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-09-04 17:54:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-09-04 17:54:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-09-04 17:54:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-04 17:54:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-09-04 17:54:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-09-04 17:54:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-09-04 17:54:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:54:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-09-04 17:54:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-09-04 17:54:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-09-04 17:54:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-09-04 17:54:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-09-04 17:54:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-09-04 17:54:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2020-09-04 17:54:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2020-09-04 17:54:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-09-04 17:54:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-09-04 17:54:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-04 17:54:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2020-09-04 17:54:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-09-04 17:54:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2020-09-04 17:54:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-09-04 17:54:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2020-09-04 17:54:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2020-09-04 17:54:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-09-04 17:54:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2020-09-04 17:54:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2020-09-04 17:54:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-09-04 17:54:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2020-09-04 17:54:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-04 17:54:28,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376661357] [2020-09-04 17:54:28,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:54:28,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2020-09-04 17:54:28,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434594753] [2020-09-04 17:54:28,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-09-04 17:54:28,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:54:28,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-09-04 17:54:28,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1981, Invalid=5851, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 17:54:28,606 INFO L87 Difference]: Start difference. First operand 630 states and 652 transitions. Second operand 89 states. [2020-09-04 17:54:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:54:51,942 INFO L93 Difference]: Finished difference Result 1250 states and 1401 transitions. [2020-09-04 17:54:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2020-09-04 17:54:51,942 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 700 [2020-09-04 17:54:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:54:51,948 INFO L225 Difference]: With dead ends: 1250 [2020-09-04 17:54:51,948 INFO L226 Difference]: Without dead ends: 983 [2020-09-04 17:54:51,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3612 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=9635, Invalid=20815, Unknown=0, NotChecked=0, Total=30450 [2020-09-04 17:54:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-09-04 17:54:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 636. [2020-09-04 17:54:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-09-04 17:54:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 658 transitions. [2020-09-04 17:54:52,050 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 658 transitions. Word has length 700 [2020-09-04 17:54:52,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:54:52,050 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 658 transitions. [2020-09-04 17:54:52,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-09-04 17:54:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 658 transitions. [2020-09-04 17:54:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2020-09-04 17:54:52,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:54:52,055 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] [2020-09-04 17:54:52,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-09-04 17:54:52,055 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:54:52,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:54:52,056 INFO L82 PathProgramCache]: Analyzing trace with hash -486926153, now seen corresponding path program 65 times [2020-09-04 17:54:52,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:54:52,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196029703] [2020-09-04 17:54:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:54:52,064 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:54:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:54:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:54:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:54:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:54:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:54:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:54:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:54:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:54:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:54:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:54:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:54:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-04 17:54:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-09-04 17:54:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-09-04 17:54:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:54:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-09-04 17:54:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-09-04 17:54:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-09-04 17:54:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-09-04 17:54:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-09-04 17:54:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-09-04 17:54:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-09-04 17:54:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-09-04 17:54:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 17:54:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-09-04 17:54:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2020-09-04 17:54:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-09-04 17:54:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2020-09-04 17:54:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2020-09-04 17:54:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-09-04 17:54:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-09-04 17:54:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-09-04 17:54:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2020-09-04 17:54:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-09-04 17:54:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-09-04 17:54:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2020-09-04 17:54:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2020-09-04 17:54:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2020-09-04 17:54:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2020-09-04 17:54:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2020-09-04 17:54:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2020-09-04 17:54:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-09-04 17:54:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-09-04 17:54:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-04 17:54:56,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196029703] [2020-09-04 17:54:56,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:54:56,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2020-09-04 17:54:56,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579824946] [2020-09-04 17:54:56,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-09-04 17:54:56,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:54:56,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-09-04 17:54:56,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=1217, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 17:54:56,603 INFO L87 Difference]: Start difference. First operand 636 states and 658 transitions. Second operand 48 states. [2020-09-04 17:54:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:54:58,411 INFO L93 Difference]: Finished difference Result 659 states and 682 transitions. [2020-09-04 17:54:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-04 17:54:58,415 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 706 [2020-09-04 17:54:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:54:58,424 INFO L225 Difference]: With dead ends: 659 [2020-09-04 17:54:58,425 INFO L226 Difference]: Without dead ends: 657 [2020-09-04 17:54:58,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1043, Invalid=1309, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 17:54:58,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-04 17:54:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 652. [2020-09-04 17:54:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-09-04 17:54:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 675 transitions. [2020-09-04 17:54:58,512 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 675 transitions. Word has length 706 [2020-09-04 17:54:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:54:58,513 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 675 transitions. [2020-09-04 17:54:58,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-09-04 17:54:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 675 transitions. [2020-09-04 17:54:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2020-09-04 17:54:58,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:54:58,518 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 44, 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] [2020-09-04 17:54:58,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-04 17:54:58,519 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:54:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:54:58,519 INFO L82 PathProgramCache]: Analyzing trace with hash 182307539, now seen corresponding path program 66 times [2020-09-04 17:54:58,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:54:58,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162310857] [2020-09-04 17:54:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:54:58,526 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:54:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:55:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-04 17:55:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 17:55:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 17:55:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:55:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:55:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:55:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:55:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:55:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:55:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:55:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-04 17:55:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-09-04 17:55:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-09-04 17:55:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:55:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-09-04 17:55:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-09-04 17:55:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-09-04 17:55:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-09-04 17:55:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-09-04 17:55:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-09-04 17:55:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-09-04 17:55:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-09-04 17:55:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 17:55:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-09-04 17:55:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2020-09-04 17:55:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-09-04 17:55:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2020-09-04 17:55:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2020-09-04 17:55:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-09-04 17:55:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-09-04 17:55:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-09-04 17:55:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2020-09-04 17:55:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-09-04 17:55:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-09-04 17:55:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2020-09-04 17:55:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2020-09-04 17:55:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2020-09-04 17:55:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2020-09-04 17:55:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2020-09-04 17:55:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2020-09-04 17:55:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-09-04 17:55:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-09-04 17:55:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2020-09-04 17:55:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2020-09-04 17:55:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-04 17:55:10,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162310857] [2020-09-04 17:55:10,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:55:10,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2020-09-04 17:55:10,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179119390] [2020-09-04 17:55:10,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-09-04 17:55:10,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:55:10,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-09-04 17:55:10,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2020-09-04 17:55:10,641 INFO L87 Difference]: Start difference. First operand 652 states and 675 transitions. Second operand 92 states. [2020-09-04 17:55:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:55:35,509 INFO L93 Difference]: Finished difference Result 1292 states and 1447 transitions. [2020-09-04 17:55:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2020-09-04 17:55:35,513 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 726 [2020-09-04 17:55:35,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:55:35,519 INFO L225 Difference]: With dead ends: 1292 [2020-09-04 17:55:35,520 INFO L226 Difference]: Without dead ends: 1013 [2020-09-04 17:55:35,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3914 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=10125, Invalid=22095, Unknown=0, NotChecked=0, Total=32220 [2020-09-04 17:55:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-09-04 17:55:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 658. [2020-09-04 17:55:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-04 17:55:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 681 transitions. [2020-09-04 17:55:35,614 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 681 transitions. Word has length 726 [2020-09-04 17:55:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:55:35,615 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 681 transitions. [2020-09-04 17:55:35,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-09-04 17:55:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 681 transitions. [2020-09-04 17:55:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2020-09-04 17:55:35,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:55:35,623 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:55:35,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-04 17:55:35,624 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:55:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:55:35,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1499659483, now seen corresponding path program 67 times [2020-09-04 17:55:35,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:55:35,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066987774] [2020-09-04 17:55:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:55:35,637 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:55:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:55:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-09-04 17:55:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:55:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-09-04 17:55:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:55:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:55:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:55:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:55:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:55:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:55:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:55:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:55:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:55:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-09-04 17:55:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-04 17:55:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:55:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-09-04 17:55:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:55:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:55:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-04 17:55:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-09-04 17:55:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-09-04 17:55:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-09-04 17:55:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-09-04 17:55:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-09-04 17:55:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2020-09-04 17:55:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-09-04 17:55:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-09-04 17:55:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-09-04 17:55:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-09-04 17:55:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2020-09-04 17:55:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2020-09-04 17:55:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2020-09-04 17:55:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-09-04 17:55:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2020-09-04 17:55:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2020-09-04 17:55:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2020-09-04 17:55:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2020-09-04 17:55:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2020-09-04 17:55:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-09-04 17:55:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-09-04 17:55:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-09-04 17:55:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-09-04 17:55:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2020-09-04 17:55:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:49,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2020-09-04 17:55:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-04 17:55:50,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066987774] [2020-09-04 17:55:50,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:55:50,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2020-09-04 17:55:50,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543852235] [2020-09-04 17:55:50,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-09-04 17:55:50,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:55:50,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-09-04 17:55:50,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2163, Invalid=6393, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 17:55:50,194 INFO L87 Difference]: Start difference. First operand 658 states and 681 transitions. Second operand 93 states. [2020-09-04 17:56:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:17,967 INFO L93 Difference]: Finished difference Result 1306 states and 1464 transitions. [2020-09-04 17:56:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2020-09-04 17:56:17,967 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 732 [2020-09-04 17:56:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:17,971 INFO L225 Difference]: With dead ends: 1306 [2020-09-04 17:56:17,971 INFO L226 Difference]: Without dead ends: 1027 [2020-09-04 17:56:17,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3960 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=10533, Invalid=22773, Unknown=0, NotChecked=0, Total=33306 [2020-09-04 17:56:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-09-04 17:56:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 664. [2020-09-04 17:56:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-04 17:56:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 687 transitions. [2020-09-04 17:56:18,067 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 687 transitions. Word has length 732 [2020-09-04 17:56:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:18,067 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 687 transitions. [2020-09-04 17:56:18,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-09-04 17:56:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 687 transitions. [2020-09-04 17:56:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2020-09-04 17:56:18,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:18,072 INFO L422 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:18,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-04 17:56:18,073 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:18,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1897101085, now seen corresponding path program 68 times [2020-09-04 17:56:18,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:18,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907830257] [2020-09-04 17:56:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:18,079 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:56:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:56:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:56:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:56:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:56:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 17:56:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 17:56:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 17:56:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 17:56:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 17:56:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:56:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 17:56:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-09-04 17:56:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-09-04 17:56:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-09-04 17:56:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 17:56:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-09-04 17:56:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-09-04 17:56:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-09-04 17:56:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 17:56:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-09-04 17:56:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-09-04 17:56:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-09-04 17:56:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2020-09-04 17:56:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-09-04 17:56:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2020-09-04 17:56:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-09-04 17:56:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2020-09-04 17:56:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-09-04 17:56:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-09-04 17:56:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-09-04 17:56:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-09-04 17:56:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2020-09-04 17:56:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2020-09-04 17:56:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2020-09-04 17:56:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2020-09-04 17:56:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-09-04 17:56:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-09-04 17:56:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2020-09-04 17:56:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2020-09-04 17:56:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2020-09-04 17:56:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-09-04 17:56:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2020-09-04 17:56:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2020-09-04 17:56:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-04 17:56:22,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907830257] [2020-09-04 17:56:22,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:22,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2020-09-04 17:56:22,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34278755] [2020-09-04 17:56:22,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-09-04 17:56:22,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:22,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-09-04 17:56:22,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=1318, Unknown=0, NotChecked=0, Total=2450 [2020-09-04 17:56:22,966 INFO L87 Difference]: Start difference. First operand 664 states and 687 transitions. Second operand 50 states. [2020-09-04 17:56:24,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:24,837 INFO L93 Difference]: Finished difference Result 687 states and 711 transitions. [2020-09-04 17:56:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 17:56:24,841 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 738 [2020-09-04 17:56:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:24,843 INFO L225 Difference]: With dead ends: 687 [2020-09-04 17:56:24,844 INFO L226 Difference]: Without dead ends: 685 [2020-09-04 17:56:24,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 17:56:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-04 17:56:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 680. [2020-09-04 17:56:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-09-04 17:56:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 704 transitions. [2020-09-04 17:56:25,015 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 704 transitions. Word has length 738 [2020-09-04 17:56:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:25,016 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 704 transitions. [2020-09-04 17:56:25,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-09-04 17:56:25,017 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 704 transitions. [2020-09-04 17:56:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2020-09-04 17:56:25,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:25,028 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:25,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-04 17:56:25,029 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:25,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:25,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1602383103, now seen corresponding path program 69 times [2020-09-04 17:56:25,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:25,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272181536] [2020-09-04 17:56:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:25,040 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-04 17:56:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:56:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-09-04 17:56:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:56:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:56:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 17:56:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 17:56:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 17:56:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 17:56:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 17:56:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:56:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 17:56:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-09-04 17:56:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-09-04 17:56:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-09-04 17:56:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 17:56:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-09-04 17:56:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-09-04 17:56:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-09-04 17:56:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 17:56:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-09-04 17:56:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-09-04 17:56:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-09-04 17:56:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2020-09-04 17:56:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-09-04 17:56:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2020-09-04 17:56:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-09-04 17:56:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2020-09-04 17:56:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-09-04 17:56:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-09-04 17:56:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-09-04 17:56:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-09-04 17:56:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2020-09-04 17:56:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2020-09-04 17:56:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2020-09-04 17:56:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2020-09-04 17:56:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-09-04 17:56:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-09-04 17:56:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2020-09-04 17:56:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2020-09-04 17:56:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2020-09-04 17:56:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-09-04 17:56:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2020-09-04 17:56:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2020-09-04 17:56:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-09-04 17:56:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-09-04 17:56:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-04 17:56:38,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272181536] [2020-09-04 17:56:38,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:38,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2020-09-04 17:56:38,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007096301] [2020-09-04 17:56:38,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-09-04 17:56:38,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:38,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-09-04 17:56:38,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2020-09-04 17:56:38,155 INFO L87 Difference]: Start difference. First operand 680 states and 704 transitions. Second operand 96 states. [2020-09-04 17:57:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:57:03,720 INFO L93 Difference]: Finished difference Result 1348 states and 1510 transitions. [2020-09-04 17:57:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2020-09-04 17:57:03,725 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 758 [2020-09-04 17:57:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:57:03,728 INFO L225 Difference]: With dead ends: 1348 [2020-09-04 17:57:03,728 INFO L226 Difference]: Without dead ends: 1057 [2020-09-04 17:57:03,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4276 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=11045, Invalid=24111, Unknown=0, NotChecked=0, Total=35156 [2020-09-04 17:57:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-09-04 17:57:03,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 686. [2020-09-04 17:57:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-09-04 17:57:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 710 transitions. [2020-09-04 17:57:03,903 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 710 transitions. Word has length 758 [2020-09-04 17:57:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:57:03,904 INFO L479 AbstractCegarLoop]: Abstraction has 686 states and 710 transitions. [2020-09-04 17:57:03,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-09-04 17:57:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 710 transitions. [2020-09-04 17:57:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2020-09-04 17:57:03,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:57:03,912 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:57:03,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-04 17:57:03,913 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:57:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:57:03,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1803386631, now seen corresponding path program 70 times [2020-09-04 17:57:03,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:57:03,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269520965] [2020-09-04 17:57:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:57:03,923 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:57:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:57:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-04 17:57:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 17:57:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-04 17:57:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 17:57:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:57:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 17:57:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 17:57:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-09-04 17:57:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-09-04 17:57:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 17:57:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-09-04 17:57:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-09-04 17:57:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-09-04 17:57:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:57:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-09-04 17:57:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-09-04 17:57:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-09-04 17:57:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-09-04 17:57:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-09-04 17:57:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-09-04 17:57:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-09-04 17:57:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2020-09-04 17:57:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-09-04 17:57:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2020-09-04 17:57:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-09-04 17:57:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-04 17:57:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2020-09-04 17:57:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2020-09-04 17:57:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2020-09-04 17:57:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-09-04 17:57:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2020-09-04 17:57:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2020-09-04 17:57:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-09-04 17:57:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-09-04 17:57:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-09-04 17:57:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2020-09-04 17:57:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2020-09-04 17:57:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-09-04 17:57:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2020-09-04 17:57:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-09-04 17:57:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2020-09-04 17:57:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2020-09-04 17:57:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-09-04 17:57:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-09-04 17:57:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2020-09-04 17:57:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2020-09-04 17:57:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-04 17:57:18,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269520965] [2020-09-04 17:57:18,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:57:18,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2020-09-04 17:57:18,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872714900] [2020-09-04 17:57:18,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-09-04 17:57:18,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:57:18,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-09-04 17:57:18,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=6959, Unknown=0, NotChecked=0, Total=9312 [2020-09-04 17:57:18,047 INFO L87 Difference]: Start difference. First operand 686 states and 710 transitions. Second operand 97 states. [2020-09-04 17:57:44,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:57:44,244 INFO L93 Difference]: Finished difference Result 1362 states and 1527 transitions. [2020-09-04 17:57:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2020-09-04 17:57:44,245 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 764 [2020-09-04 17:57:44,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:57:44,247 INFO L225 Difference]: With dead ends: 1362 [2020-09-04 17:57:44,248 INFO L226 Difference]: Without dead ends: 1071 [2020-09-04 17:57:44,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=11471, Invalid=24819, Unknown=0, NotChecked=0, Total=36290 [2020-09-04 17:57:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-09-04 17:57:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 692. [2020-09-04 17:57:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-09-04 17:57:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 716 transitions. [2020-09-04 17:57:44,350 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 716 transitions. Word has length 764 [2020-09-04 17:57:44,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:57:44,350 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 716 transitions. [2020-09-04 17:57:44,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-09-04 17:57:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 716 transitions. [2020-09-04 17:57:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2020-09-04 17:57:44,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:57:44,355 INFO L422 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:57:44,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-04 17:57:44,356 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:57:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:57:44,356 INFO L82 PathProgramCache]: Analyzing trace with hash 647293711, now seen corresponding path program 71 times [2020-09-04 17:57:44,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:57:44,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255962803] [2020-09-04 17:57:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:57:44,362 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:57:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:57:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:57:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:57:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:57:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:57:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:57:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:57:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:57:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:57:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:57:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-09-04 17:57:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-09-04 17:57:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-09-04 17:57:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-04 17:57:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-09-04 17:57:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-09-04 17:57:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-09-04 17:57:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:57:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-09-04 17:57:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-09-04 17:57:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-09-04 17:57:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-09-04 17:57:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-09-04 17:57:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-09-04 17:57:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2020-09-04 17:57:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2020-09-04 17:57:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-09-04 17:57:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-09-04 17:57:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-04 17:57:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2020-09-04 17:57:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-09-04 17:57:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2020-09-04 17:57:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-09-04 17:57:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2020-09-04 17:57:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2020-09-04 17:57:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-09-04 17:57:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2020-09-04 17:57:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2020-09-04 17:57:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-09-04 17:57:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2020-09-04 17:57:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2020-09-04 17:57:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-09-04 17:57:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-09-04 17:57:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2020-09-04 17:57:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2020-09-04 17:57:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 746 [2020-09-04 17:57:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2020-09-04 17:57:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-04 17:57:50,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255962803] [2020-09-04 17:57:50,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:57:50,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2020-09-04 17:57:50,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664918725] [2020-09-04 17:57:50,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-09-04 17:57:50,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:57:50,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-09-04 17:57:50,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=1423, Unknown=0, NotChecked=0, Total=2652 [2020-09-04 17:57:50,021 INFO L87 Difference]: Start difference. First operand 692 states and 716 transitions. Second operand 52 states. [2020-09-04 17:57:52,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:57:52,320 INFO L93 Difference]: Finished difference Result 715 states and 740 transitions. [2020-09-04 17:57:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-04 17:57:52,324 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 770 [2020-09-04 17:57:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:57:52,327 INFO L225 Difference]: With dead ends: 715 [2020-09-04 17:57:52,328 INFO L226 Difference]: Without dead ends: 713 [2020-09-04 17:57:52,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1233, Invalid=1523, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 17:57:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-09-04 17:57:52,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 708. [2020-09-04 17:57:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-09-04 17:57:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 733 transitions. [2020-09-04 17:57:52,424 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 733 transitions. Word has length 770 [2020-09-04 17:57:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:57:52,425 INFO L479 AbstractCegarLoop]: Abstraction has 708 states and 733 transitions. [2020-09-04 17:57:52,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-09-04 17:57:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 733 transitions. [2020-09-04 17:57:52,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-09-04 17:57:52,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:57:52,430 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:57:52,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-04 17:57:52,430 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:57:52,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:57:52,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1265631531, now seen corresponding path program 72 times [2020-09-04 17:57:52,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:57:52,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852640171] [2020-09-04 17:57:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:57:52,437 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:57:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:58:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 17:58:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 17:58:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 17:58:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-09-04 17:58:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-09-04 17:58:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-09-04 17:58:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-09-04 17:58:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:58:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:58:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-09-04 17:58:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-09-04 17:58:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-09-04 17:58:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-09-04 17:58:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-09-04 17:58:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-09-04 17:58:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-09-04 17:58:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:58:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-09-04 17:58:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-09-04 17:58:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-09-04 17:58:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-09-04 17:58:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-09-04 17:58:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-09-04 17:58:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2020-09-04 17:58:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2020-09-04 17:58:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-09-04 17:58:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-09-04 17:58:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-04 17:58:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2020-09-04 17:58:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-09-04 17:58:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2020-09-04 17:58:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-09-04 17:58:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2020-09-04 17:58:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2020-09-04 17:58:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-09-04 17:58:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2020-09-04 17:58:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2020-09-04 17:58:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-09-04 17:58:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2020-09-04 17:58:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2020-09-04 17:58:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-09-04 17:58:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-09-04 17:58:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2020-09-04 17:58:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2020-09-04 17:58:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 746 [2020-09-04 17:58:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2020-09-04 17:58:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-09-04 17:58:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-09-04 17:58:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-04 17:58:07,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852640171] [2020-09-04 17:58:07,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:58:07,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2020-09-04 17:58:07,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953071002] [2020-09-04 17:58:07,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2020-09-04 17:58:07,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:58:07,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2020-09-04 17:58:07,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2020-09-04 17:58:07,899 INFO L87 Difference]: Start difference. First operand 708 states and 733 transitions. Second operand 100 states. [2020-09-04 17:58:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:58:38,023 INFO L93 Difference]: Finished difference Result 1404 states and 1573 transitions. [2020-09-04 17:58:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2020-09-04 17:58:38,027 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 790 [2020-09-04 17:58:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:58:38,032 INFO L225 Difference]: With dead ends: 1404 [2020-09-04 17:58:38,032 INFO L226 Difference]: Without dead ends: 1101 [2020-09-04 17:58:38,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4654 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=12005, Invalid=26215, Unknown=0, NotChecked=0, Total=38220 [2020-09-04 17:58:38,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-04 17:58:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 714. [2020-09-04 17:58:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-09-04 17:58:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 739 transitions. [2020-09-04 17:58:38,247 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 739 transitions. Word has length 790 [2020-09-04 17:58:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:58:38,248 INFO L479 AbstractCegarLoop]: Abstraction has 714 states and 739 transitions. [2020-09-04 17:58:38,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 100 states. [2020-09-04 17:58:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 739 transitions. [2020-09-04 17:58:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-09-04 17:58:38,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:58:38,261 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:58:38,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-04 17:58:38,261 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:58:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:58:38,262 INFO L82 PathProgramCache]: Analyzing trace with hash -983502029, now seen corresponding path program 73 times [2020-09-04 17:58:38,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:58:38,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789810923] [2020-09-04 17:58:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:58:38,273 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:58:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:53,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:58:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-09-04 17:58:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:58:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-09-04 17:58:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-09-04 17:58:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-09-04 17:58:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-09-04 17:58:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:58:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-04 17:58:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-09-04 17:58:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-09-04 17:58:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:58:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-09-04 17:58:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-09-04 17:58:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-09-04 17:58:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-09-04 17:58:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-09-04 17:58:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-09-04 17:58:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-09-04 17:58:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-09-04 17:58:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 17:58:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-09-04 17:58:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2020-09-04 17:58:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-09-04 17:58:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2020-09-04 17:58:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2020-09-04 17:58:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-09-04 17:58:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-09-04 17:58:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-09-04 17:58:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2020-09-04 17:58:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-09-04 17:58:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-09-04 17:58:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2020-09-04 17:58:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2020-09-04 17:58:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2020-09-04 17:58:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2020-09-04 17:58:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2020-09-04 17:58:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2020-09-04 17:58:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-09-04 17:58:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-09-04 17:58:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2020-09-04 17:58:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2020-09-04 17:58:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-09-04 17:58:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2020-09-04 17:58:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2020-09-04 17:58:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2020-09-04 17:58:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 762 [2020-09-04 17:58:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-09-04 17:58:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 782 [2020-09-04 17:58:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-04 17:58:54,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789810923] [2020-09-04 17:58:54,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:58:54,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2020-09-04 17:58:54,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35546715] [2020-09-04 17:58:54,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-09-04 17:58:54,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:58:54,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-09-04 17:58:54,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2551, Invalid=7549, Unknown=0, NotChecked=0, Total=10100 [2020-09-04 17:58:54,522 INFO L87 Difference]: Start difference. First operand 714 states and 739 transitions. Second operand 101 states. [2020-09-04 17:59:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:27,112 INFO L93 Difference]: Finished difference Result 1418 states and 1590 transitions. [2020-09-04 17:59:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2020-09-04 17:59:27,112 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 796 [2020-09-04 17:59:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:27,115 INFO L225 Difference]: With dead ends: 1418 [2020-09-04 17:59:27,115 INFO L226 Difference]: Without dead ends: 1115 [2020-09-04 17:59:27,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4704 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=12449, Invalid=26953, Unknown=0, NotChecked=0, Total=39402 [2020-09-04 17:59:27,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2020-09-04 17:59:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 720. [2020-09-04 17:59:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-09-04 17:59:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 745 transitions. [2020-09-04 17:59:27,223 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 745 transitions. Word has length 796 [2020-09-04 17:59:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:27,224 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 745 transitions. [2020-09-04 17:59:27,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-09-04 17:59:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 745 transitions. [2020-09-04 17:59:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-09-04 17:59:27,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:27,229 INFO L422 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:27,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-04 17:59:27,230 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1451638587, now seen corresponding path program 74 times [2020-09-04 17:59:27,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:27,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823729780] [2020-09-04 17:59:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:27,237 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:59:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:59:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:59:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:59:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:59:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:59:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:59:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:59:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:59:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-09-04 17:59:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-04 17:59:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:59:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-09-04 17:59:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:59:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:59:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-04 17:59:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-09-04 17:59:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-09-04 17:59:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-09-04 17:59:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-09-04 17:59:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-09-04 17:59:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2020-09-04 17:59:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-09-04 17:59:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-09-04 17:59:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-09-04 17:59:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-09-04 17:59:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2020-09-04 17:59:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2020-09-04 17:59:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2020-09-04 17:59:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-09-04 17:59:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2020-09-04 17:59:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2020-09-04 17:59:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2020-09-04 17:59:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2020-09-04 17:59:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2020-09-04 17:59:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-09-04 17:59:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-09-04 17:59:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-09-04 17:59:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-09-04 17:59:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2020-09-04 17:59:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2020-09-04 17:59:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2020-09-04 17:59:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2020-09-04 17:59:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2020-09-04 17:59:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-09-04 17:59:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 768 [2020-09-04 17:59:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2020-09-04 17:59:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-09-04 17:59:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-04 17:59:33,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823729780] [2020-09-04 17:59:33,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:33,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2020-09-04 17:59:33,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044843273] [2020-09-04 17:59:33,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-09-04 17:59:33,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:33,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-09-04 17:59:33,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=1532, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 17:59:33,849 INFO L87 Difference]: Start difference. First operand 720 states and 745 transitions. Second operand 54 states. [2020-09-04 17:59:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:36,185 INFO L93 Difference]: Finished difference Result 743 states and 769 transitions. [2020-09-04 17:59:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-09-04 17:59:36,190 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 802 [2020-09-04 17:59:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:36,194 INFO L225 Difference]: With dead ends: 743 [2020-09-04 17:59:36,195 INFO L226 Difference]: Without dead ends: 741 [2020-09-04 17:59:36,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1334, Invalid=1636, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 17:59:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-04 17:59:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 736. [2020-09-04 17:59:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-09-04 17:59:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 762 transitions. [2020-09-04 17:59:36,422 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 762 transitions. Word has length 802 [2020-09-04 17:59:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:36,423 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 762 transitions. [2020-09-04 17:59:36,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-09-04 17:59:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 762 transitions. [2020-09-04 17:59:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-09-04 17:59:36,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:36,436 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:36,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-04 17:59:36,437 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:36,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:36,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1941538647, now seen corresponding path program 75 times [2020-09-04 17:59:36,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:36,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127299004] [2020-09-04 17:59:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:36,459 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 17:59:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 17:59:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 17:59:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-09-04 17:59:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:59:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:59:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-09-04 17:59:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-09-04 17:59:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-09-04 17:59:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-09-04 17:59:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2020-09-04 17:59:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:59:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-09-04 17:59:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:59:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:59:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-04 17:59:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-09-04 17:59:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-09-04 17:59:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-09-04 17:59:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-09-04 17:59:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-09-04 17:59:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2020-09-04 17:59:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-09-04 17:59:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-09-04 17:59:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-09-04 17:59:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-09-04 17:59:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2020-09-04 17:59:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2020-09-04 17:59:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2020-09-04 17:59:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-09-04 17:59:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2020-09-04 17:59:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2020-09-04 17:59:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2020-09-04 17:59:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2020-09-04 17:59:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2020-09-04 17:59:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-09-04 17:59:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-09-04 17:59:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-09-04 17:59:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-09-04 17:59:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2020-09-04 17:59:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2020-09-04 17:59:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2020-09-04 17:59:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2020-09-04 17:59:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2020-09-04 17:59:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-09-04 17:59:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 768 [2020-09-04 17:59:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2020-09-04 17:59:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-09-04 17:59:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2020-09-04 17:59:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2020-09-04 17:59:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-04 17:59:54,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127299004] [2020-09-04 17:59:54,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:54,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2020-09-04 17:59:54,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404336273] [2020-09-04 17:59:54,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-09-04 17:59:54,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:54,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-09-04 17:59:54,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2020-09-04 17:59:54,466 INFO L87 Difference]: Start difference. First operand 736 states and 762 transitions. Second operand 104 states. [2020-09-04 18:00:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:28,186 INFO L93 Difference]: Finished difference Result 1460 states and 1636 transitions. [2020-09-04 18:00:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2020-09-04 18:00:28,191 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 822 [2020-09-04 18:00:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:28,194 INFO L225 Difference]: With dead ends: 1460 [2020-09-04 18:00:28,195 INFO L226 Difference]: Without dead ends: 1145 [2020-09-04 18:00:28,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5048 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=13005, Invalid=28407, Unknown=0, NotChecked=0, Total=41412 [2020-09-04 18:00:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-09-04 18:00:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 742. [2020-09-04 18:00:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-09-04 18:00:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 768 transitions. [2020-09-04 18:00:28,307 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 768 transitions. Word has length 822 [2020-09-04 18:00:28,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:28,307 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 768 transitions. [2020-09-04 18:00:28,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-09-04 18:00:28,307 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 768 transitions. [2020-09-04 18:00:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-09-04 18:00:28,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:28,316 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:28,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-04 18:00:28,317 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash 203446623, now seen corresponding path program 76 times [2020-09-04 18:00:28,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:28,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56201041] [2020-09-04 18:00:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:28,329 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 18:00:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 18:00:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-04 18:00:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2020-09-04 18:00:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-09-04 18:00:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-09-04 18:00:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-09-04 18:00:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 18:00:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-04 18:00:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-09-04 18:00:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2020-09-04 18:00:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-09-04 18:00:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 18:00:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2020-09-04 18:00:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-09-04 18:00:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-09-04 18:00:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 18:00:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-09-04 18:00:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-09-04 18:00:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-09-04 18:00:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2020-09-04 18:00:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-09-04 18:00:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2020-09-04 18:00:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-09-04 18:00:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2020-09-04 18:00:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-09-04 18:00:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-09-04 18:00:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-09-04 18:00:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-09-04 18:00:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2020-09-04 18:00:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2020-09-04 18:00:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2020-09-04 18:00:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2020-09-04 18:00:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-09-04 18:00:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-09-04 18:00:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2020-09-04 18:00:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2020-09-04 18:00:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2020-09-04 18:00:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-09-04 18:00:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2020-09-04 18:00:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2020-09-04 18:00:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-09-04 18:00:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-09-04 18:00:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 754 [2020-09-04 18:00:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-09-04 18:00:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2020-09-04 18:00:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-09-04 18:00:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-09-04 18:00:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 804 [2020-09-04 18:00:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 814 [2020-09-04 18:00:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-04 18:00:47,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56201041] [2020-09-04 18:00:47,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:47,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2020-09-04 18:00:47,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845780902] [2020-09-04 18:00:47,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-09-04 18:00:47,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:47,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-09-04 18:00:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2757, Invalid=8163, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 18:00:47,208 INFO L87 Difference]: Start difference. First operand 742 states and 768 transitions. Second operand 105 states. [2020-09-04 18:01:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:24,477 INFO L93 Difference]: Finished difference Result 1474 states and 1653 transitions. [2020-09-04 18:01:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-09-04 18:01:24,477 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 828 [2020-09-04 18:01:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:24,481 INFO L225 Difference]: With dead ends: 1474 [2020-09-04 18:01:24,482 INFO L226 Difference]: Without dead ends: 1159 [2020-09-04 18:01:24,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5100 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=13467, Invalid=29175, Unknown=0, NotChecked=0, Total=42642 [2020-09-04 18:01:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-09-04 18:01:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 748. [2020-09-04 18:01:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-04 18:01:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 774 transitions. [2020-09-04 18:01:24,694 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 774 transitions. Word has length 828 [2020-09-04 18:01:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:24,695 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 774 transitions. [2020-09-04 18:01:24,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-09-04 18:01:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 774 transitions. [2020-09-04 18:01:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-09-04 18:01:24,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:24,706 INFO L422 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:01:24,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-09-04 18:01:24,706 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:24,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:24,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1009547929, now seen corresponding path program 77 times [2020-09-04 18:01:24,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:24,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242281461] [2020-09-04 18:01:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:24,719 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-09-04 18:01:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 18:01:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 18:01:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-04 18:01:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-09-04 18:01:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2020-09-04 18:01:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 18:01:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-09-04 18:01:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-09-04 18:01:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-09-04 18:01:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 18:01:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2020-09-04 18:01:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-09-04 18:01:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-09-04 18:01:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-09-04 18:01:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-09-04 18:01:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-09-04 18:01:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-09-04 18:01:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2020-09-04 18:01:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-09-04 18:01:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2020-09-04 18:01:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-09-04 18:01:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-04 18:01:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2020-09-04 18:01:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2020-09-04 18:01:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2020-09-04 18:01:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-09-04 18:01:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2020-09-04 18:01:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2020-09-04 18:01:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-09-04 18:01:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-09-04 18:01:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-09-04 18:01:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2020-09-04 18:01:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2020-09-04 18:01:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-09-04 18:01:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2020-09-04 18:01:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-09-04 18:01:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2020-09-04 18:01:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2020-09-04 18:01:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-09-04 18:01:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-09-04 18:01:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2020-09-04 18:01:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2020-09-04 18:01:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 760 [2020-09-04 18:01:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 770 [2020-09-04 18:01:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-09-04 18:01:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 790 [2020-09-04 18:01:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-09-04 18:01:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-09-04 18:01:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 820 [2020-09-04 18:01:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-04 18:01:32,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242281461] [2020-09-04 18:01:32,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:01:32,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2020-09-04 18:01:32,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361777495] [2020-09-04 18:01:32,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-09-04 18:01:32,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:01:32,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-09-04 18:01:32,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=1645, Unknown=0, NotChecked=0, Total=3080 [2020-09-04 18:01:32,297 INFO L87 Difference]: Start difference. First operand 748 states and 774 transitions. Second operand 56 states. [2020-09-04 18:01:34,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:34,789 INFO L93 Difference]: Finished difference Result 771 states and 798 transitions. [2020-09-04 18:01:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-04 18:01:34,794 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 834 [2020-09-04 18:01:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:34,798 INFO L225 Difference]: With dead ends: 771 [2020-09-04 18:01:34,799 INFO L226 Difference]: Without dead ends: 769 [2020-09-04 18:01:34,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1439, Invalid=1753, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 18:01:34,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-04 18:01:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 764. [2020-09-04 18:01:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2020-09-04 18:01:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 791 transitions. [2020-09-04 18:01:35,013 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 791 transitions. Word has length 834 [2020-09-04 18:01:35,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:35,014 INFO L479 AbstractCegarLoop]: Abstraction has 764 states and 791 transitions. [2020-09-04 18:01:35,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-09-04 18:01:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 791 transitions. [2020-09-04 18:01:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2020-09-04 18:01:35,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:35,025 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:01:35,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-04 18:01:35,025 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:35,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash 905052035, now seen corresponding path program 78 times [2020-09-04 18:01:35,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:35,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289127429] [2020-09-04 18:01:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:35,039 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat