/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-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:56:08,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:56:08,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:56:08,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:56:08,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:56:08,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:56:08,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:56:08,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:56:08,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:56:08,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:56:08,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:56:08,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:56:08,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:56:08,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:56:08,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:56:08,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:56:08,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:56:08,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:56:08,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:56:08,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:56:08,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:56:08,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:56:08,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:56:08,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:56:08,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:56:08,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:56:08,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:56:08,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:56:08,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:56:08,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:56:08,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:56:08,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:56:08,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:56:08,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:56:08,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:56:08,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:56:08,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:56:08,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:56:08,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:56:08,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:56:08,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:56:08,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:56:08,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:56:08,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:56:08,309 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:56:08,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:56:08,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:56:08,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:56:08,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:56:08,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:56:08,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:56:08,310 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:56:08,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:56:08,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:56:08,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:56:08,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:56:08,665 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:56:08,666 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-07-17 14:56:08,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9dc2f5a8/b7c1ab97e9dc4f41af030c17e38f4de8/FLAG059417e77 [2020-07-17 14:56:09,287 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:56:09,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-07-17 14:56:09,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9dc2f5a8/b7c1ab97e9dc4f41af030c17e38f4de8/FLAG059417e77 [2020-07-17 14:56:09,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9dc2f5a8/b7c1ab97e9dc4f41af030c17e38f4de8 [2020-07-17 14:56:09,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:56:09,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:56:09,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:56:09,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:56:09,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:56:09,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb8949b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09, skipping insertion in model container [2020-07-17 14:56:09,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:56:09,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:56:09,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:56:09,913 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:56:09,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:56:09,949 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:56:09,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09 WrapperNode [2020-07-17 14:56:09,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:56:09,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:56:09,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:56:09,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:56:09,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (1/1) ... [2020-07-17 14:56:09,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:56:09,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:56:09,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:56:09,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:56:09,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:56:10,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:56:10,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:56:10,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:56:10,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:56:10,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:56:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:56:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:56:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:56:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:56:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:56:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:56:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:56:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:56:10,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:56:10,360 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 14:56:10,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:56:10 BoogieIcfgContainer [2020-07-17 14:56:10,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:56:10,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:56:10,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:56:10,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:56:10,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:56:09" (1/3) ... [2020-07-17 14:56:10,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2119ad03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:56:10, skipping insertion in model container [2020-07-17 14:56:10,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:09" (2/3) ... [2020-07-17 14:56:10,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2119ad03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:56:10, skipping insertion in model container [2020-07-17 14:56:10,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:56:10" (3/3) ... [2020-07-17 14:56:10,376 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-07-17 14:56:10,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:56:10,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:56:10,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:56:10,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:56:10,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:56:10,444 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:56:10,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:56:10,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:56:10,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:56:10,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:56:10,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:56:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-17 14:56:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 14:56:10,470 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:10,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:10,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:10,481 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-07-17 14:56:10,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:10,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566800637] [2020-07-17 14:56:10,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:10,797 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2020-07-17 14:56:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:10,946 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:10,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566800637] [2020-07-17 14:56:10,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:10,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 14:56:10,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537533519] [2020-07-17 14:56:10,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 14:56:10,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:10,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 14:56:10,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 14:56:10,986 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-07-17 14:56:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:11,126 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-07-17 14:56:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 14:56:11,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-17 14:56:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:11,140 INFO L225 Difference]: With dead ends: 46 [2020-07-17 14:56:11,140 INFO L226 Difference]: Without dead ends: 25 [2020-07-17 14:56:11,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 14:56:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-17 14:56:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-07-17 14:56:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-17 14:56:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-17 14:56:11,200 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-07-17 14:56:11,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:11,201 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-17 14:56:11,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 14:56:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-17 14:56:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 14:56:11,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:11,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:11,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:56:11,204 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:11,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-07-17 14:56:11,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:11,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621897363] [2020-07-17 14:56:11,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:11,384 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:11,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621897363] [2020-07-17 14:56:11,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:11,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 14:56:11,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587179242] [2020-07-17 14:56:11,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 14:56:11,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:11,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 14:56:11,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-17 14:56:11,388 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-07-17 14:56:11,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:11,522 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-07-17 14:56:11,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 14:56:11,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-07-17 14:56:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:11,524 INFO L225 Difference]: With dead ends: 36 [2020-07-17 14:56:11,525 INFO L226 Difference]: Without dead ends: 34 [2020-07-17 14:56:11,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-17 14:56:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-17 14:56:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-17 14:56:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 14:56:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-17 14:56:11,540 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-07-17 14:56:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:11,541 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-17 14:56:11,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 14:56:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-17 14:56:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 14:56:11,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:11,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:11,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:56:11,544 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:11,545 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-07-17 14:56:11,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:11,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058353241] [2020-07-17 14:56:11,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:11,681 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:11,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058353241] [2020-07-17 14:56:11,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:11,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 14:56:11,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107786192] [2020-07-17 14:56:11,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 14:56:11,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:11,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 14:56:11,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-17 14:56:11,685 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-07-17 14:56:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:11,887 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-07-17 14:56:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 14:56:11,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-07-17 14:56:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:11,889 INFO L225 Difference]: With dead ends: 45 [2020-07-17 14:56:11,890 INFO L226 Difference]: Without dead ends: 43 [2020-07-17 14:56:11,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-07-17 14:56:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-17 14:56:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-17 14:56:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-17 14:56:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-07-17 14:56:11,904 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-07-17 14:56:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:11,905 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-07-17 14:56:11,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 14:56:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-07-17 14:56:11,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 14:56:11,906 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:11,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:11,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 14:56:11,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:11,908 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-07-17 14:56:11,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:11,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332538278] [2020-07-17 14:56:11,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:12,129 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:12,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332538278] [2020-07-17 14:56:12,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:12,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 14:56:12,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779152322] [2020-07-17 14:56:12,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 14:56:12,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:12,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 14:56:12,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-17 14:56:12,132 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-07-17 14:56:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:12,359 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-07-17 14:56:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 14:56:12,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-07-17 14:56:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:12,363 INFO L225 Difference]: With dead ends: 54 [2020-07-17 14:56:12,363 INFO L226 Difference]: Without dead ends: 52 [2020-07-17 14:56:12,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-07-17 14:56:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-17 14:56:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-07-17 14:56:12,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-17 14:56:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-07-17 14:56:12,376 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-07-17 14:56:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:12,377 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-07-17 14:56:12,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 14:56:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-07-17 14:56:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-17 14:56:12,379 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:12,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:12,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 14:56:12,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:12,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-07-17 14:56:12,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:12,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468703730] [2020-07-17 14:56:12,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:12,608 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:12,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468703730] [2020-07-17 14:56:12,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:12,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-17 14:56:12,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575541140] [2020-07-17 14:56:12,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 14:56:12,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:12,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 14:56:12,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-07-17 14:56:12,612 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 13 states. [2020-07-17 14:56:12,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:12,843 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-07-17 14:56:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 14:56:12,844 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-07-17 14:56:12,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:12,846 INFO L225 Difference]: With dead ends: 63 [2020-07-17 14:56:12,846 INFO L226 Difference]: Without dead ends: 61 [2020-07-17 14:56:12,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-07-17 14:56:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-17 14:56:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-17 14:56:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-17 14:56:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-07-17 14:56:12,860 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-07-17 14:56:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:12,861 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-07-17 14:56:12,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 14:56:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-07-17 14:56:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-17 14:56:12,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:12,863 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:12,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 14:56:12,864 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:12,864 INFO L82 PathProgramCache]: Analyzing trace with hash -426927570, now seen corresponding path program 5 times [2020-07-17 14:56:12,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:12,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601801951] [2020-07-17 14:56:12,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:13,154 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:13,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601801951] [2020-07-17 14:56:13,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:13,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-17 14:56:13,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412580867] [2020-07-17 14:56:13,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 14:56:13,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:13,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 14:56:13,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-17 14:56:13,165 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 15 states. [2020-07-17 14:56:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:13,448 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-07-17 14:56:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-17 14:56:13,451 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-07-17 14:56:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:13,453 INFO L225 Difference]: With dead ends: 72 [2020-07-17 14:56:13,453 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 14:56:13,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-07-17 14:56:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 14:56:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-07-17 14:56:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-17 14:56:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-07-17 14:56:13,465 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-07-17 14:56:13,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:13,466 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-07-17 14:56:13,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 14:56:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-07-17 14:56:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-17 14:56:13,468 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:13,468 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:13,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 14:56:13,469 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:13,469 INFO L82 PathProgramCache]: Analyzing trace with hash -32472430, now seen corresponding path program 6 times [2020-07-17 14:56:13,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:13,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432589211] [2020-07-17 14:56:13,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:13,702 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:13,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432589211] [2020-07-17 14:56:13,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:13,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-17 14:56:13,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906318225] [2020-07-17 14:56:13,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 14:56:13,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:13,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 14:56:13,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-07-17 14:56:13,705 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 17 states. [2020-07-17 14:56:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:14,035 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-07-17 14:56:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-17 14:56:14,036 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-07-17 14:56:14,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:14,038 INFO L225 Difference]: With dead ends: 81 [2020-07-17 14:56:14,038 INFO L226 Difference]: Without dead ends: 79 [2020-07-17 14:56:14,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-07-17 14:56:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-17 14:56:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-07-17 14:56:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-17 14:56:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-07-17 14:56:14,052 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-07-17 14:56:14,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:14,053 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-07-17 14:56:14,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 14:56:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-07-17 14:56:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-17 14:56:14,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:14,055 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:14,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 14:56:14,056 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:14,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:14,056 INFO L82 PathProgramCache]: Analyzing trace with hash 872598190, now seen corresponding path program 7 times [2020-07-17 14:56:14,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:14,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008840903] [2020-07-17 14:56:14,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:14,321 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:14,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008840903] [2020-07-17 14:56:14,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:14,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-17 14:56:14,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357424642] [2020-07-17 14:56:14,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 14:56:14,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:14,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 14:56:14,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-07-17 14:56:14,324 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 19 states. [2020-07-17 14:56:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:14,740 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-07-17 14:56:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-17 14:56:14,741 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-07-17 14:56:14,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:14,743 INFO L225 Difference]: With dead ends: 90 [2020-07-17 14:56:14,747 INFO L226 Difference]: Without dead ends: 88 [2020-07-17 14:56:14,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 14:56:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-17 14:56:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-17 14:56:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-17 14:56:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-07-17 14:56:14,775 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-07-17 14:56:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:14,775 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-07-17 14:56:14,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 14:56:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-07-17 14:56:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 14:56:14,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:14,778 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:14,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 14:56:14,779 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:14,779 INFO L82 PathProgramCache]: Analyzing trace with hash -299245038, now seen corresponding path program 8 times [2020-07-17 14:56:14,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:14,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793737892] [2020-07-17 14:56:14,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:15,119 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:15,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793737892] [2020-07-17 14:56:15,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:15,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-07-17 14:56:15,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352419186] [2020-07-17 14:56:15,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-17 14:56:15,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:15,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-17 14:56:15,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-07-17 14:56:15,122 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 21 states. [2020-07-17 14:56:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:15,555 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-07-17 14:56:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-17 14:56:15,556 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-07-17 14:56:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:15,557 INFO L225 Difference]: With dead ends: 99 [2020-07-17 14:56:15,558 INFO L226 Difference]: Without dead ends: 97 [2020-07-17 14:56:15,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=995, Unknown=0, NotChecked=0, Total=1406 [2020-07-17 14:56:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-17 14:56:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-07-17 14:56:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-17 14:56:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-07-17 14:56:15,580 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-07-17 14:56:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:15,581 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-07-17 14:56:15,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-17 14:56:15,581 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-07-17 14:56:15,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-17 14:56:15,583 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:15,584 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:15,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 14:56:15,584 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:15,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:15,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1245914322, now seen corresponding path program 9 times [2020-07-17 14:56:15,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:15,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108383053] [2020-07-17 14:56:15,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:15,919 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:15,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108383053] [2020-07-17 14:56:15,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:15,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-07-17 14:56:15,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907011300] [2020-07-17 14:56:15,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-17 14:56:15,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:15,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-17 14:56:15,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-07-17 14:56:15,922 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 23 states. [2020-07-17 14:56:16,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:16,539 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-07-17 14:56:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-17 14:56:16,540 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2020-07-17 14:56:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:16,545 INFO L225 Difference]: With dead ends: 108 [2020-07-17 14:56:16,545 INFO L226 Difference]: Without dead ends: 106 [2020-07-17 14:56:16,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=506, Invalid=1216, Unknown=0, NotChecked=0, Total=1722 [2020-07-17 14:56:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-17 14:56:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-07-17 14:56:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-17 14:56:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-07-17 14:56:16,582 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-07-17 14:56:16,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:16,583 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-07-17 14:56:16,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-17 14:56:16,584 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-07-17 14:56:16,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-17 14:56:16,592 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:16,592 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:16,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 14:56:16,593 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:16,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2038063506, now seen corresponding path program 10 times [2020-07-17 14:56:16,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:16,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485252410] [2020-07-17 14:56:16,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:16,986 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:16,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485252410] [2020-07-17 14:56:16,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:16,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-07-17 14:56:16,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549150662] [2020-07-17 14:56:16,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-17 14:56:16,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:16,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-17 14:56:16,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-07-17 14:56:16,992 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 25 states. [2020-07-17 14:56:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:17,590 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-07-17 14:56:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-17 14:56:17,590 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-07-17 14:56:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:17,592 INFO L225 Difference]: With dead ends: 117 [2020-07-17 14:56:17,592 INFO L226 Difference]: Without dead ends: 115 [2020-07-17 14:56:17,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2020-07-17 14:56:17,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-17 14:56:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-07-17 14:56:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-17 14:56:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-07-17 14:56:17,607 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-07-17 14:56:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:17,608 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-07-17 14:56:17,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-17 14:56:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-07-17 14:56:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-17 14:56:17,610 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:17,610 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:17,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 14:56:17,610 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:17,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2017708974, now seen corresponding path program 11 times [2020-07-17 14:56:17,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:17,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206754549] [2020-07-17 14:56:17,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:18,010 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:18,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206754549] [2020-07-17 14:56:18,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:18,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-07-17 14:56:18,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502612074] [2020-07-17 14:56:18,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-17 14:56:18,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:18,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-17 14:56:18,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-07-17 14:56:18,013 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 27 states. [2020-07-17 14:56:18,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:18,715 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2020-07-17 14:56:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-17 14:56:18,716 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2020-07-17 14:56:18,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:18,718 INFO L225 Difference]: With dead ends: 126 [2020-07-17 14:56:18,718 INFO L226 Difference]: Without dead ends: 124 [2020-07-17 14:56:18,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=726, Invalid=1724, Unknown=0, NotChecked=0, Total=2450 [2020-07-17 14:56:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-17 14:56:18,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-17 14:56:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-17 14:56:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2020-07-17 14:56:18,731 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 110 [2020-07-17 14:56:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:18,732 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2020-07-17 14:56:18,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-17 14:56:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2020-07-17 14:56:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-17 14:56:18,734 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:18,734 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:18,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 14:56:18,735 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:18,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:18,735 INFO L82 PathProgramCache]: Analyzing trace with hash 746193170, now seen corresponding path program 12 times [2020-07-17 14:56:18,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:18,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436701164] [2020-07-17 14:56:18,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:19,167 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:19,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436701164] [2020-07-17 14:56:19,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:19,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-07-17 14:56:19,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86712330] [2020-07-17 14:56:19,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-17 14:56:19,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-17 14:56:19,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-07-17 14:56:19,170 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 29 states. [2020-07-17 14:56:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:19,908 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-07-17 14:56:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-17 14:56:19,909 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 119 [2020-07-17 14:56:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:19,910 INFO L225 Difference]: With dead ends: 135 [2020-07-17 14:56:19,911 INFO L226 Difference]: Without dead ends: 133 [2020-07-17 14:56:19,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=851, Invalid=2011, Unknown=0, NotChecked=0, Total=2862 [2020-07-17 14:56:19,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-17 14:56:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-07-17 14:56:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-17 14:56:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-07-17 14:56:19,924 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 119 [2020-07-17 14:56:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:19,925 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-07-17 14:56:19,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-17 14:56:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-07-17 14:56:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-17 14:56:19,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:19,927 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:19,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 14:56:19,927 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:19,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1981783086, now seen corresponding path program 13 times [2020-07-17 14:56:19,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:19,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342952386] [2020-07-17 14:56:19,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:20,420 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:20,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342952386] [2020-07-17 14:56:20,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:20,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-07-17 14:56:20,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911683522] [2020-07-17 14:56:20,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 14:56:20,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:20,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 14:56:20,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-07-17 14:56:20,423 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 31 states. [2020-07-17 14:56:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:21,256 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2020-07-17 14:56:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-17 14:56:21,257 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 128 [2020-07-17 14:56:21,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:21,259 INFO L225 Difference]: With dead ends: 144 [2020-07-17 14:56:21,259 INFO L226 Difference]: Without dead ends: 142 [2020-07-17 14:56:21,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=986, Invalid=2320, Unknown=0, NotChecked=0, Total=3306 [2020-07-17 14:56:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-17 14:56:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-17 14:56:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-17 14:56:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2020-07-17 14:56:21,273 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 128 [2020-07-17 14:56:21,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:21,273 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2020-07-17 14:56:21,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 14:56:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2020-07-17 14:56:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-17 14:56:21,275 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:21,276 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:21,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 14:56:21,276 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:21,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:21,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1705033874, now seen corresponding path program 14 times [2020-07-17 14:56:21,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:21,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317966004] [2020-07-17 14:56:21,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:21,888 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:21,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317966004] [2020-07-17 14:56:21,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:21,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-07-17 14:56:21,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99572902] [2020-07-17 14:56:21,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-17 14:56:21,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:21,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-17 14:56:21,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 14:56:21,893 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 33 states. [2020-07-17 14:56:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:22,805 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-07-17 14:56:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-17 14:56:22,805 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 137 [2020-07-17 14:56:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:22,807 INFO L225 Difference]: With dead ends: 153 [2020-07-17 14:56:22,807 INFO L226 Difference]: Without dead ends: 151 [2020-07-17 14:56:22,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1131, Invalid=2651, Unknown=0, NotChecked=0, Total=3782 [2020-07-17 14:56:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-17 14:56:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-07-17 14:56:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-17 14:56:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-07-17 14:56:22,821 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 137 [2020-07-17 14:56:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:22,821 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-07-17 14:56:22,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-17 14:56:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-07-17 14:56:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-17 14:56:22,823 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:22,824 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:22,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 14:56:22,824 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:22,825 INFO L82 PathProgramCache]: Analyzing trace with hash 400051374, now seen corresponding path program 15 times [2020-07-17 14:56:22,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:22,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012542266] [2020-07-17 14:56:22,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:23,463 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:23,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012542266] [2020-07-17 14:56:23,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:23,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-07-17 14:56:23,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013974715] [2020-07-17 14:56:23,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-17 14:56:23,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:23,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-17 14:56:23,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 14:56:23,467 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 35 states. [2020-07-17 14:56:24,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:24,535 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2020-07-17 14:56:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-17 14:56:24,536 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 146 [2020-07-17 14:56:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:24,538 INFO L225 Difference]: With dead ends: 162 [2020-07-17 14:56:24,539 INFO L226 Difference]: Without dead ends: 160 [2020-07-17 14:56:24,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1286, Invalid=3004, Unknown=0, NotChecked=0, Total=4290 [2020-07-17 14:56:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-17 14:56:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-07-17 14:56:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-17 14:56:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-07-17 14:56:24,556 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 146 [2020-07-17 14:56:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:24,557 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-07-17 14:56:24,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-17 14:56:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-07-17 14:56:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-17 14:56:24,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:24,560 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:24,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 14:56:24,560 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:24,561 INFO L82 PathProgramCache]: Analyzing trace with hash -714694638, now seen corresponding path program 16 times [2020-07-17 14:56:24,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:24,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332414117] [2020-07-17 14:56:24,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:25,263 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:25,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332414117] [2020-07-17 14:56:25,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:25,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-07-17 14:56:25,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815264975] [2020-07-17 14:56:25,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-17 14:56:25,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:25,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-17 14:56:25,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2020-07-17 14:56:25,268 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 37 states. [2020-07-17 14:56:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:26,713 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2020-07-17 14:56:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-17 14:56:26,714 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 155 [2020-07-17 14:56:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:26,720 INFO L225 Difference]: With dead ends: 171 [2020-07-17 14:56:26,721 INFO L226 Difference]: Without dead ends: 169 [2020-07-17 14:56:26,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1451, Invalid=3379, Unknown=0, NotChecked=0, Total=4830 [2020-07-17 14:56:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-17 14:56:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-07-17 14:56:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-17 14:56:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-07-17 14:56:26,746 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 155 [2020-07-17 14:56:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:26,747 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-07-17 14:56:26,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-17 14:56:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-07-17 14:56:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-17 14:56:26,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:26,752 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:26,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 14:56:26,757 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:26,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:26,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1275732690, now seen corresponding path program 17 times [2020-07-17 14:56:26,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:26,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378324528] [2020-07-17 14:56:26,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:27,559 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:27,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378324528] [2020-07-17 14:56:27,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:27,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-07-17 14:56:27,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624209279] [2020-07-17 14:56:27,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-17 14:56:27,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:27,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-17 14:56:27,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 14:56:27,569 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 39 states. [2020-07-17 14:56:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:28,854 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2020-07-17 14:56:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-07-17 14:56:28,855 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 164 [2020-07-17 14:56:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:28,857 INFO L225 Difference]: With dead ends: 180 [2020-07-17 14:56:28,857 INFO L226 Difference]: Without dead ends: 178 [2020-07-17 14:56:28,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1626, Invalid=3776, Unknown=0, NotChecked=0, Total=5402 [2020-07-17 14:56:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-17 14:56:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-07-17 14:56:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-17 14:56:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-07-17 14:56:28,872 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 164 [2020-07-17 14:56:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:28,872 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-07-17 14:56:28,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-17 14:56:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-07-17 14:56:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-07-17 14:56:28,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:28,875 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:28,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 14:56:28,875 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:28,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:28,876 INFO L82 PathProgramCache]: Analyzing trace with hash -29122670, now seen corresponding path program 18 times [2020-07-17 14:56:28,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:28,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548529323] [2020-07-17 14:56:28,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:29,821 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:29,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548529323] [2020-07-17 14:56:29,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:29,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-07-17 14:56:29,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750912583] [2020-07-17 14:56:29,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-17 14:56:29,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:29,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-17 14:56:29,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2020-07-17 14:56:29,824 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 41 states. [2020-07-17 14:56:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:31,171 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2020-07-17 14:56:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-17 14:56:31,171 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 173 [2020-07-17 14:56:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:31,174 INFO L225 Difference]: With dead ends: 189 [2020-07-17 14:56:31,174 INFO L226 Difference]: Without dead ends: 187 [2020-07-17 14:56:31,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1811, Invalid=4195, Unknown=0, NotChecked=0, Total=6006 [2020-07-17 14:56:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-17 14:56:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-07-17 14:56:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-17 14:56:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-07-17 14:56:31,191 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 173 [2020-07-17 14:56:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:31,191 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-07-17 14:56:31,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-17 14:56:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-07-17 14:56:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-17 14:56:31,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:31,196 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:31,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 14:56:31,197 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:31,197 INFO L82 PathProgramCache]: Analyzing trace with hash 251678126, now seen corresponding path program 19 times [2020-07-17 14:56:31,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:31,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245015090] [2020-07-17 14:56:31,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:32,113 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:32,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245015090] [2020-07-17 14:56:32,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:32,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-07-17 14:56:32,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640760921] [2020-07-17 14:56:32,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-17 14:56:32,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:32,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-17 14:56:32,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2020-07-17 14:56:32,116 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 43 states. [2020-07-17 14:56:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:33,596 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-07-17 14:56:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-07-17 14:56:33,597 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2020-07-17 14:56:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:33,598 INFO L225 Difference]: With dead ends: 198 [2020-07-17 14:56:33,599 INFO L226 Difference]: Without dead ends: 196 [2020-07-17 14:56:33,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2006, Invalid=4636, Unknown=0, NotChecked=0, Total=6642 [2020-07-17 14:56:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-17 14:56:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-07-17 14:56:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-17 14:56:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-07-17 14:56:33,615 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 182 [2020-07-17 14:56:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:33,615 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-07-17 14:56:33,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-17 14:56:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-07-17 14:56:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-07-17 14:56:33,618 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:33,618 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:33,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-17 14:56:33,618 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:33,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:33,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1263550702, now seen corresponding path program 20 times [2020-07-17 14:56:33,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:33,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939384423] [2020-07-17 14:56:33,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:34,596 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:34,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939384423] [2020-07-17 14:56:34,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:34,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-07-17 14:56:34,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078711168] [2020-07-17 14:56:34,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-17 14:56:34,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:34,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-17 14:56:34,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2020-07-17 14:56:34,603 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 45 states. [2020-07-17 14:56:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:36,319 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2020-07-17 14:56:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-17 14:56:36,319 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 191 [2020-07-17 14:56:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:36,322 INFO L225 Difference]: With dead ends: 207 [2020-07-17 14:56:36,322 INFO L226 Difference]: Without dead ends: 205 [2020-07-17 14:56:36,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2211, Invalid=5099, Unknown=0, NotChecked=0, Total=7310 [2020-07-17 14:56:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-17 14:56:36,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-07-17 14:56:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-17 14:56:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2020-07-17 14:56:36,336 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 191 [2020-07-17 14:56:36,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:36,337 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2020-07-17 14:56:36,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-17 14:56:36,337 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2020-07-17 14:56:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-17 14:56:36,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:36,339 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:36,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-17 14:56:36,339 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:36,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:36,340 INFO L82 PathProgramCache]: Analyzing trace with hash -612393426, now seen corresponding path program 21 times [2020-07-17 14:56:36,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:36,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945018128] [2020-07-17 14:56:36,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:37,394 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:37,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945018128] [2020-07-17 14:56:37,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:37,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-07-17 14:56:37,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310650847] [2020-07-17 14:56:37,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-17 14:56:37,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:37,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-17 14:56:37,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2020-07-17 14:56:37,398 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 47 states. [2020-07-17 14:56:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:39,252 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2020-07-17 14:56:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-07-17 14:56:39,255 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 200 [2020-07-17 14:56:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:39,257 INFO L225 Difference]: With dead ends: 216 [2020-07-17 14:56:39,258 INFO L226 Difference]: Without dead ends: 214 [2020-07-17 14:56:39,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2426, Invalid=5584, Unknown=0, NotChecked=0, Total=8010 [2020-07-17 14:56:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-17 14:56:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-07-17 14:56:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-07-17 14:56:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2020-07-17 14:56:39,270 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 200 [2020-07-17 14:56:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:39,271 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2020-07-17 14:56:39,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-17 14:56:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2020-07-17 14:56:39,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-17 14:56:39,273 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:39,273 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:39,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-17 14:56:39,274 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1625096558, now seen corresponding path program 22 times [2020-07-17 14:56:39,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:39,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030723002] [2020-07-17 14:56:39,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:40,534 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:40,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030723002] [2020-07-17 14:56:40,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:40,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-07-17 14:56:40,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421698423] [2020-07-17 14:56:40,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-17 14:56:40,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:40,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-17 14:56:40,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2020-07-17 14:56:40,539 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 49 states. [2020-07-17 14:56:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:42,505 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2020-07-17 14:56:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-17 14:56:42,506 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 209 [2020-07-17 14:56:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:42,508 INFO L225 Difference]: With dead ends: 225 [2020-07-17 14:56:42,508 INFO L226 Difference]: Without dead ends: 223 [2020-07-17 14:56:42,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2651, Invalid=6091, Unknown=0, NotChecked=0, Total=8742 [2020-07-17 14:56:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-17 14:56:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-07-17 14:56:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-17 14:56:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-07-17 14:56:42,525 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 209 [2020-07-17 14:56:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:42,526 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-07-17 14:56:42,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-17 14:56:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-07-17 14:56:42,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-07-17 14:56:42,528 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:42,529 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:42,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-17 14:56:42,529 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:42,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:42,530 INFO L82 PathProgramCache]: Analyzing trace with hash 972803758, now seen corresponding path program 23 times [2020-07-17 14:56:42,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:42,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594877109] [2020-07-17 14:56:42,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:43,825 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:43,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594877109] [2020-07-17 14:56:43,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:43,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-07-17 14:56:43,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677505319] [2020-07-17 14:56:43,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-17 14:56:43,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:43,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-17 14:56:43,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2020-07-17 14:56:43,828 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 51 states. [2020-07-17 14:56:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:45,878 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2020-07-17 14:56:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-07-17 14:56:45,879 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-07-17 14:56:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:45,882 INFO L225 Difference]: With dead ends: 234 [2020-07-17 14:56:45,882 INFO L226 Difference]: Without dead ends: 232 [2020-07-17 14:56:45,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2886, Invalid=6620, Unknown=0, NotChecked=0, Total=9506 [2020-07-17 14:56:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-17 14:56:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-07-17 14:56:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-17 14:56:45,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-07-17 14:56:45,895 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 218 [2020-07-17 14:56:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:45,896 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-07-17 14:56:45,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-17 14:56:45,896 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-07-17 14:56:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-07-17 14:56:45,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:45,898 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:45,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-17 14:56:45,899 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:45,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:45,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1240113646, now seen corresponding path program 24 times [2020-07-17 14:56:45,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:45,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924557593] [2020-07-17 14:56:45,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:47,274 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:47,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924557593] [2020-07-17 14:56:47,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:47,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-07-17 14:56:47,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289067579] [2020-07-17 14:56:47,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-17 14:56:47,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:47,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-17 14:56:47,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2020-07-17 14:56:47,276 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 53 states. [2020-07-17 14:56:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:49,609 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2020-07-17 14:56:49,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-17 14:56:49,610 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 227 [2020-07-17 14:56:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:49,612 INFO L225 Difference]: With dead ends: 243 [2020-07-17 14:56:49,612 INFO L226 Difference]: Without dead ends: 241 [2020-07-17 14:56:49,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3131, Invalid=7171, Unknown=0, NotChecked=0, Total=10302 [2020-07-17 14:56:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-17 14:56:49,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-07-17 14:56:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-17 14:56:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2020-07-17 14:56:49,640 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 227 [2020-07-17 14:56:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:49,641 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2020-07-17 14:56:49,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-17 14:56:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2020-07-17 14:56:49,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-17 14:56:49,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:49,645 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:49,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-17 14:56:49,645 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:49,646 INFO L82 PathProgramCache]: Analyzing trace with hash 956096302, now seen corresponding path program 25 times [2020-07-17 14:56:49,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:49,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321581180] [2020-07-17 14:56:49,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:51,097 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:51,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321581180] [2020-07-17 14:56:51,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:51,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-07-17 14:56:51,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283009929] [2020-07-17 14:56:51,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-17 14:56:51,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:51,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-17 14:56:51,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2020-07-17 14:56:51,101 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 55 states. [2020-07-17 14:56:53,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:53,941 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2020-07-17 14:56:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-07-17 14:56:53,941 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 236 [2020-07-17 14:56:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:53,944 INFO L225 Difference]: With dead ends: 252 [2020-07-17 14:56:53,945 INFO L226 Difference]: Without dead ends: 250 [2020-07-17 14:56:53,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3386, Invalid=7744, Unknown=0, NotChecked=0, Total=11130 [2020-07-17 14:56:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-17 14:56:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-07-17 14:56:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-17 14:56:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2020-07-17 14:56:53,958 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 236 [2020-07-17 14:56:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:53,959 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2020-07-17 14:56:53,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-17 14:56:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2020-07-17 14:56:53,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-17 14:56:53,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:53,961 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:53,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-07-17 14:56:53,961 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:53,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:53,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1006707310, now seen corresponding path program 26 times [2020-07-17 14:56:53,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:53,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479418951] [2020-07-17 14:56:53,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:55,566 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:55,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479418951] [2020-07-17 14:56:55,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:55,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-07-17 14:56:55,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246016576] [2020-07-17 14:56:55,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-17 14:56:55,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:55,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-17 14:56:55,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2020-07-17 14:56:55,569 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 57 states. [2020-07-17 14:56:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:58,618 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2020-07-17 14:56:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-17 14:56:58,619 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 245 [2020-07-17 14:56:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:58,622 INFO L225 Difference]: With dead ends: 261 [2020-07-17 14:56:58,622 INFO L226 Difference]: Without dead ends: 259 [2020-07-17 14:56:58,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3651, Invalid=8339, Unknown=0, NotChecked=0, Total=11990 [2020-07-17 14:56:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-07-17 14:56:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-07-17 14:56:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-17 14:56:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2020-07-17 14:56:58,636 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 245 [2020-07-17 14:56:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:58,637 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2020-07-17 14:56:58,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-17 14:56:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2020-07-17 14:56:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-17 14:56:58,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:58,640 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:58,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-07-17 14:56:58,640 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:58,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1426771886, now seen corresponding path program 27 times [2020-07-17 14:56:58,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:58,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904349671] [2020-07-17 14:56:58,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:00,348 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:00,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904349671] [2020-07-17 14:57:00,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:00,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2020-07-17 14:57:00,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487245701] [2020-07-17 14:57:00,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-17 14:57:00,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:00,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-17 14:57:00,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2020-07-17 14:57:00,359 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 59 states. [2020-07-17 14:57:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:03,731 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2020-07-17 14:57:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-07-17 14:57:03,732 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 254 [2020-07-17 14:57:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:03,734 INFO L225 Difference]: With dead ends: 270 [2020-07-17 14:57:03,735 INFO L226 Difference]: Without dead ends: 268 [2020-07-17 14:57:03,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3926, Invalid=8956, Unknown=0, NotChecked=0, Total=12882 [2020-07-17 14:57:03,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-17 14:57:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-07-17 14:57:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-17 14:57:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-07-17 14:57:03,754 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 254 [2020-07-17 14:57:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:03,755 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-07-17 14:57:03,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-17 14:57:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-07-17 14:57:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-17 14:57:03,757 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:03,758 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:03,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-07-17 14:57:03,758 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:03,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:03,759 INFO L82 PathProgramCache]: Analyzing trace with hash -447251182, now seen corresponding path program 28 times [2020-07-17 14:57:03,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:03,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244950175] [2020-07-17 14:57:03,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:05,652 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:05,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244950175] [2020-07-17 14:57:05,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:05,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-07-17 14:57:05,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711707078] [2020-07-17 14:57:05,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-17 14:57:05,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:05,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-17 14:57:05,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2020-07-17 14:57:05,654 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 61 states. [2020-07-17 14:57:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:09,034 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2020-07-17 14:57:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-17 14:57:09,035 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 263 [2020-07-17 14:57:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:09,037 INFO L225 Difference]: With dead ends: 279 [2020-07-17 14:57:09,037 INFO L226 Difference]: Without dead ends: 277 [2020-07-17 14:57:09,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4211, Invalid=9595, Unknown=0, NotChecked=0, Total=13806 [2020-07-17 14:57:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-17 14:57:09,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-07-17 14:57:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-17 14:57:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2020-07-17 14:57:09,050 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 263 [2020-07-17 14:57:09,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:09,050 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2020-07-17 14:57:09,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-17 14:57:09,050 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2020-07-17 14:57:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-17 14:57:09,052 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:09,052 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:09,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-07-17 14:57:09,053 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:09,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:09,053 INFO L82 PathProgramCache]: Analyzing trace with hash -122838994, now seen corresponding path program 29 times [2020-07-17 14:57:09,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:09,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531494608] [2020-07-17 14:57:09,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:11,085 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:11,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531494608] [2020-07-17 14:57:11,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:11,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2020-07-17 14:57:11,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458328209] [2020-07-17 14:57:11,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-17 14:57:11,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:11,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-17 14:57:11,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2020-07-17 14:57:11,088 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 63 states. [2020-07-17 14:57:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:14,666 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2020-07-17 14:57:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-07-17 14:57:14,667 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 272 [2020-07-17 14:57:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:14,669 INFO L225 Difference]: With dead ends: 288 [2020-07-17 14:57:14,669 INFO L226 Difference]: Without dead ends: 286 [2020-07-17 14:57:14,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2637 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4506, Invalid=10256, Unknown=0, NotChecked=0, Total=14762 [2020-07-17 14:57:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-07-17 14:57:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-07-17 14:57:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-17 14:57:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2020-07-17 14:57:14,683 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 272 [2020-07-17 14:57:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:14,684 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2020-07-17 14:57:14,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-17 14:57:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2020-07-17 14:57:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-07-17 14:57:14,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:14,687 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:14,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-07-17 14:57:14,687 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash 144129170, now seen corresponding path program 30 times [2020-07-17 14:57:14,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:14,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909642869] [2020-07-17 14:57:14,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:16,922 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:16,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909642869] [2020-07-17 14:57:16,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:16,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-07-17 14:57:16,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858634606] [2020-07-17 14:57:16,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-17 14:57:16,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:16,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-17 14:57:16,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2020-07-17 14:57:16,926 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 65 states. [2020-07-17 14:57:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:20,964 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2020-07-17 14:57:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-07-17 14:57:20,964 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 281 [2020-07-17 14:57:20,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:20,966 INFO L225 Difference]: With dead ends: 297 [2020-07-17 14:57:20,966 INFO L226 Difference]: Without dead ends: 295 [2020-07-17 14:57:20,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2818 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4811, Invalid=10939, Unknown=0, NotChecked=0, Total=15750 [2020-07-17 14:57:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-07-17 14:57:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-07-17 14:57:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-07-17 14:57:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-07-17 14:57:20,979 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 281 [2020-07-17 14:57:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:20,980 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-07-17 14:57:20,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-17 14:57:20,980 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-07-17 14:57:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-07-17 14:57:20,982 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:20,983 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:20,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-07-17 14:57:20,983 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:20,983 INFO L82 PathProgramCache]: Analyzing trace with hash -59944786, now seen corresponding path program 31 times [2020-07-17 14:57:20,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:20,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982351183] [2020-07-17 14:57:20,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:23,324 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:23,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982351183] [2020-07-17 14:57:23,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:23,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2020-07-17 14:57:23,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796316857] [2020-07-17 14:57:23,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-17 14:57:23,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:23,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-17 14:57:23,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2020-07-17 14:57:23,327 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 67 states. [2020-07-17 14:57:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:27,372 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2020-07-17 14:57:27,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-07-17 14:57:27,373 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 290 [2020-07-17 14:57:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:27,375 INFO L225 Difference]: With dead ends: 306 [2020-07-17 14:57:27,376 INFO L226 Difference]: Without dead ends: 304 [2020-07-17 14:57:27,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5126, Invalid=11644, Unknown=0, NotChecked=0, Total=16770 [2020-07-17 14:57:27,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-07-17 14:57:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-07-17 14:57:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-17 14:57:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2020-07-17 14:57:27,391 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 290 [2020-07-17 14:57:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:27,391 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2020-07-17 14:57:27,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-17 14:57:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2020-07-17 14:57:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-07-17 14:57:27,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:27,394 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:27,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-07-17 14:57:27,394 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:27,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1849039890, now seen corresponding path program 32 times [2020-07-17 14:57:27,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:27,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511695228] [2020-07-17 14:57:27,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:29,924 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:29,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511695228] [2020-07-17 14:57:29,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:29,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2020-07-17 14:57:29,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255330492] [2020-07-17 14:57:29,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-17 14:57:29,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:29,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-17 14:57:29,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2020-07-17 14:57:29,927 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 69 states. [2020-07-17 14:57:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:34,231 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2020-07-17 14:57:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-07-17 14:57:34,232 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 299 [2020-07-17 14:57:34,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:34,235 INFO L225 Difference]: With dead ends: 315 [2020-07-17 14:57:34,235 INFO L226 Difference]: Without dead ends: 313 [2020-07-17 14:57:34,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5451, Invalid=12371, Unknown=0, NotChecked=0, Total=17822 [2020-07-17 14:57:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-07-17 14:57:34,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-07-17 14:57:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-07-17 14:57:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-07-17 14:57:34,249 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 299 [2020-07-17 14:57:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:34,250 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-07-17 14:57:34,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-17 14:57:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-07-17 14:57:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-07-17 14:57:34,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:34,253 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:34,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-07-17 14:57:34,253 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:34,254 INFO L82 PathProgramCache]: Analyzing trace with hash 651288878, now seen corresponding path program 33 times [2020-07-17 14:57:34,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:34,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636287269] [2020-07-17 14:57:34,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:36,773 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:36,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636287269] [2020-07-17 14:57:36,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:36,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2020-07-17 14:57:36,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634411386] [2020-07-17 14:57:36,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-07-17 14:57:36,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:36,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-07-17 14:57:36,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2020-07-17 14:57:36,775 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 71 states. [2020-07-17 14:57:41,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:41,620 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2020-07-17 14:57:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-07-17 14:57:41,621 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 308 [2020-07-17 14:57:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:41,624 INFO L225 Difference]: With dead ends: 324 [2020-07-17 14:57:41,624 INFO L226 Difference]: Without dead ends: 322 [2020-07-17 14:57:41,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5786, Invalid=13120, Unknown=0, NotChecked=0, Total=18906 [2020-07-17 14:57:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-07-17 14:57:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-07-17 14:57:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-07-17 14:57:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2020-07-17 14:57:41,636 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 308 [2020-07-17 14:57:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:41,637 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2020-07-17 14:57:41,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-07-17 14:57:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2020-07-17 14:57:41,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-07-17 14:57:41,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:41,639 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:41,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-07-17 14:57:41,640 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:41,640 INFO L82 PathProgramCache]: Analyzing trace with hash 682367890, now seen corresponding path program 34 times [2020-07-17 14:57:41,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:41,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900981416] [2020-07-17 14:57:41,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:44,416 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:44,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900981416] [2020-07-17 14:57:44,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:44,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2020-07-17 14:57:44,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891433328] [2020-07-17 14:57:44,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-17 14:57:44,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-17 14:57:44,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2020-07-17 14:57:44,419 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 73 states. [2020-07-17 14:57:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:49,381 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2020-07-17 14:57:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-07-17 14:57:49,382 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 317 [2020-07-17 14:57:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:49,385 INFO L225 Difference]: With dead ends: 333 [2020-07-17 14:57:49,385 INFO L226 Difference]: Without dead ends: 331 [2020-07-17 14:57:49,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=6131, Invalid=13891, Unknown=0, NotChecked=0, Total=20022 [2020-07-17 14:57:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-07-17 14:57:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-07-17 14:57:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-07-17 14:57:49,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2020-07-17 14:57:49,400 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 317 [2020-07-17 14:57:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:49,401 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2020-07-17 14:57:49,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-17 14:57:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2020-07-17 14:57:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-17 14:57:49,404 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:49,405 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:49,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-07-17 14:57:49,405 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:49,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1402777170, now seen corresponding path program 35 times [2020-07-17 14:57:49,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:49,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599688380] [2020-07-17 14:57:49,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:57:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:57:52,467 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:57:52,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599688380] [2020-07-17 14:57:52,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:57:52,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2020-07-17 14:57:52,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483278016] [2020-07-17 14:57:52,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-17 14:57:52,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:57:52,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-17 14:57:52,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2020-07-17 14:57:52,471 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 75 states. [2020-07-17 14:57:57,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:57:57,620 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2020-07-17 14:57:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-07-17 14:57:57,620 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 326 [2020-07-17 14:57:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:57:57,622 INFO L225 Difference]: With dead ends: 342 [2020-07-17 14:57:57,622 INFO L226 Difference]: Without dead ends: 340 [2020-07-17 14:57:57,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3813 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=6486, Invalid=14684, Unknown=0, NotChecked=0, Total=21170 [2020-07-17 14:57:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-07-17 14:57:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-07-17 14:57:57,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-17 14:57:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2020-07-17 14:57:57,635 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 326 [2020-07-17 14:57:57,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:57:57,636 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2020-07-17 14:57:57,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-17 14:57:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2020-07-17 14:57:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-17 14:57:57,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:57:57,638 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:57:57,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-07-17 14:57:57,639 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:57:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:57:57,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1670300910, now seen corresponding path program 36 times [2020-07-17 14:57:57,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:57:57,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286979899] [2020-07-17 14:57:57,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:57:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:58:00,897 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:58:00,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286979899] [2020-07-17 14:58:00,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:58:00,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2020-07-17 14:58:00,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354539571] [2020-07-17 14:58:00,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-07-17 14:58:00,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:58:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-07-17 14:58:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2020-07-17 14:58:00,899 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 77 states. [2020-07-17 14:58:06,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:58:06,160 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2020-07-17 14:58:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-07-17 14:58:06,161 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 335 [2020-07-17 14:58:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:58:06,164 INFO L225 Difference]: With dead ends: 351 [2020-07-17 14:58:06,164 INFO L226 Difference]: Without dead ends: 349 [2020-07-17 14:58:06,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6851, Invalid=15499, Unknown=0, NotChecked=0, Total=22350 [2020-07-17 14:58:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-07-17 14:58:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-07-17 14:58:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-07-17 14:58:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2020-07-17 14:58:06,177 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 335 [2020-07-17 14:58:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:58:06,177 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2020-07-17 14:58:06,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-07-17 14:58:06,177 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2020-07-17 14:58:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-07-17 14:58:06,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:58:06,180 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:58:06,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-07-17 14:58:06,180 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:58:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:58:06,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1347837394, now seen corresponding path program 37 times [2020-07-17 14:58:06,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:58:06,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880781517] [2020-07-17 14:58:06,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:58:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:58:09,380 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:58:09,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880781517] [2020-07-17 14:58:09,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:58:09,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2020-07-17 14:58:09,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485018710] [2020-07-17 14:58:09,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-17 14:58:09,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:58:09,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-17 14:58:09,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2020-07-17 14:58:09,382 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 79 states. [2020-07-17 14:58:14,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:58:14,553 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2020-07-17 14:58:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-07-17 14:58:14,554 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 344 [2020-07-17 14:58:14,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:58:14,557 INFO L225 Difference]: With dead ends: 360 [2020-07-17 14:58:14,557 INFO L226 Difference]: Without dead ends: 358 [2020-07-17 14:58:14,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4253 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=7226, Invalid=16336, Unknown=0, NotChecked=0, Total=23562 [2020-07-17 14:58:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-07-17 14:58:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-07-17 14:58:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-07-17 14:58:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-07-17 14:58:14,569 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 344 [2020-07-17 14:58:14,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:58:14,570 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-07-17 14:58:14,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-17 14:58:14,570 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-07-17 14:58:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-07-17 14:58:14,572 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:58:14,573 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:58:14,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-07-17 14:58:14,573 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:58:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:58:14,573 INFO L82 PathProgramCache]: Analyzing trace with hash -165230, now seen corresponding path program 38 times [2020-07-17 14:58:14,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:58:14,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152471650] [2020-07-17 14:58:14,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:58:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:58:17,971 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:58:17,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152471650] [2020-07-17 14:58:17,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:58:17,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2020-07-17 14:58:17,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192303597] [2020-07-17 14:58:17,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-07-17 14:58:17,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:58:17,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-07-17 14:58:17,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2020-07-17 14:58:17,974 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 81 states. [2020-07-17 14:58:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:58:23,470 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2020-07-17 14:58:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-07-17 14:58:23,471 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 353 [2020-07-17 14:58:23,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:58:23,474 INFO L225 Difference]: With dead ends: 369 [2020-07-17 14:58:23,474 INFO L226 Difference]: Without dead ends: 367 [2020-07-17 14:58:23,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4482 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=7611, Invalid=17195, Unknown=0, NotChecked=0, Total=24806 [2020-07-17 14:58:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-07-17 14:58:23,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-07-17 14:58:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-07-17 14:58:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2020-07-17 14:58:23,486 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 353 [2020-07-17 14:58:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:58:23,486 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2020-07-17 14:58:23,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-07-17 14:58:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2020-07-17 14:58:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-07-17 14:58:23,489 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:58:23,489 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:58:23,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-07-17 14:58:23,490 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:58:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:58:23,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1054027090, now seen corresponding path program 39 times [2020-07-17 14:58:23,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:58:23,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952794204] [2020-07-17 14:58:23,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:58:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:58:26,859 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:58:26,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952794204] [2020-07-17 14:58:26,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:58:26,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2020-07-17 14:58:26,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366341702] [2020-07-17 14:58:26,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-07-17 14:58:26,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:58:26,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-07-17 14:58:26,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2020-07-17 14:58:26,861 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 83 states. [2020-07-17 14:58:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:58:33,110 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2020-07-17 14:58:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-07-17 14:58:33,111 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 362 [2020-07-17 14:58:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:58:33,113 INFO L225 Difference]: With dead ends: 378 [2020-07-17 14:58:33,113 INFO L226 Difference]: Without dead ends: 376 [2020-07-17 14:58:33,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=8006, Invalid=18076, Unknown=0, NotChecked=0, Total=26082 [2020-07-17 14:58:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-07-17 14:58:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-07-17 14:58:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-07-17 14:58:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2020-07-17 14:58:33,125 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 362 [2020-07-17 14:58:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:58:33,126 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2020-07-17 14:58:33,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-07-17 14:58:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2020-07-17 14:58:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-07-17 14:58:33,128 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:58:33,128 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:58:33,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-07-17 14:58:33,129 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:58:33,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:58:33,129 INFO L82 PathProgramCache]: Analyzing trace with hash -607593966, now seen corresponding path program 40 times [2020-07-17 14:58:33,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:58:33,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290965160] [2020-07-17 14:58:33,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:58:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:58:36,845 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:58:36,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290965160] [2020-07-17 14:58:36,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:58:36,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2020-07-17 14:58:36,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458873892] [2020-07-17 14:58:36,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-17 14:58:36,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:58:36,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-17 14:58:36,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2020-07-17 14:58:36,847 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 85 states. [2020-07-17 14:58:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:58:43,209 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2020-07-17 14:58:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-07-17 14:58:43,210 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 371 [2020-07-17 14:58:43,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:58:43,212 INFO L225 Difference]: With dead ends: 387 [2020-07-17 14:58:43,213 INFO L226 Difference]: Without dead ends: 385 [2020-07-17 14:58:43,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4958 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=8411, Invalid=18979, Unknown=0, NotChecked=0, Total=27390 [2020-07-17 14:58:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-07-17 14:58:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2020-07-17 14:58:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-07-17 14:58:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2020-07-17 14:58:43,224 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 371 [2020-07-17 14:58:43,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:58:43,224 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2020-07-17 14:58:43,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-17 14:58:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2020-07-17 14:58:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-07-17 14:58:43,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:58:43,227 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:58:43,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-07-17 14:58:43,228 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:58:43,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:58:43,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1601495854, now seen corresponding path program 41 times [2020-07-17 14:58:43,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:58:43,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13615325] [2020-07-17 14:58:43,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:58:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:58:47,036 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:58:47,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13615325] [2020-07-17 14:58:47,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:58:47,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2020-07-17 14:58:47,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046837691] [2020-07-17 14:58:47,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-17 14:58:47,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:58:47,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-17 14:58:47,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2020-07-17 14:58:47,039 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 87 states. [2020-07-17 14:58:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:58:53,330 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2020-07-17 14:58:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-07-17 14:58:53,331 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 380 [2020-07-17 14:58:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:58:53,334 INFO L225 Difference]: With dead ends: 396 [2020-07-17 14:58:53,334 INFO L226 Difference]: Without dead ends: 394 [2020-07-17 14:58:53,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5205 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=8826, Invalid=19904, Unknown=0, NotChecked=0, Total=28730 [2020-07-17 14:58:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-07-17 14:58:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-07-17 14:58:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-07-17 14:58:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2020-07-17 14:58:53,346 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 380 [2020-07-17 14:58:53,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:58:53,347 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2020-07-17 14:58:53,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-17 14:58:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2020-07-17 14:58:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-07-17 14:58:53,349 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:58:53,350 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:58:53,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-07-17 14:58:53,350 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:58:53,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:58:53,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1974773358, now seen corresponding path program 42 times [2020-07-17 14:58:53,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:58:53,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590445488] [2020-07-17 14:58:53,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:58:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:58:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:58:57,644 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:58:57,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590445488] [2020-07-17 14:58:57,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:58:57,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2020-07-17 14:58:57,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609292710] [2020-07-17 14:58:57,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-07-17 14:58:57,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:58:57,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-07-17 14:58:57,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1939, Invalid=5893, Unknown=0, NotChecked=0, Total=7832 [2020-07-17 14:58:57,647 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 89 states. [2020-07-17 14:59:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:59:04,707 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2020-07-17 14:59:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-07-17 14:59:04,709 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 389 [2020-07-17 14:59:04,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:59:04,711 INFO L225 Difference]: With dead ends: 405 [2020-07-17 14:59:04,711 INFO L226 Difference]: Without dead ends: 403 [2020-07-17 14:59:04,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=9251, Invalid=20851, Unknown=0, NotChecked=0, Total=30102 [2020-07-17 14:59:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-07-17 14:59:04,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-07-17 14:59:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-07-17 14:59:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-07-17 14:59:04,722 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 389 [2020-07-17 14:59:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:59:04,722 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-07-17 14:59:04,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-07-17 14:59:04,722 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-07-17 14:59:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-17 14:59:04,725 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:59:04,725 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:59:04,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-07-17 14:59:04,726 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:59:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:59:04,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1997132718, now seen corresponding path program 43 times [2020-07-17 14:59:04,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:59:04,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257379161] [2020-07-17 14:59:04,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:59:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:59:09,185 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:59:09,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257379161] [2020-07-17 14:59:09,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:59:09,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2020-07-17 14:59:09,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588771355] [2020-07-17 14:59:09,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-17 14:59:09,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:59:09,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-17 14:59:09,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=6162, Unknown=0, NotChecked=0, Total=8190 [2020-07-17 14:59:09,188 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 91 states. [2020-07-17 14:59:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:59:16,764 INFO L93 Difference]: Finished difference Result 414 states and 414 transitions. [2020-07-17 14:59:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-07-17 14:59:16,765 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 398 [2020-07-17 14:59:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:59:16,769 INFO L225 Difference]: With dead ends: 414 [2020-07-17 14:59:16,769 INFO L226 Difference]: Without dead ends: 412 [2020-07-17 14:59:16,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5717 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=9686, Invalid=21820, Unknown=0, NotChecked=0, Total=31506 [2020-07-17 14:59:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-07-17 14:59:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2020-07-17 14:59:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-07-17 14:59:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2020-07-17 14:59:16,784 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 398 [2020-07-17 14:59:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:59:16,784 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2020-07-17 14:59:16,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-17 14:59:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2020-07-17 14:59:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-07-17 14:59:16,787 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:59:16,787 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:59:16,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-07-17 14:59:16,788 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:59:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:59:16,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1208157934, now seen corresponding path program 44 times [2020-07-17 14:59:16,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:59:16,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086067905] [2020-07-17 14:59:16,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:59:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:59:21,552 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:59:21,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086067905] [2020-07-17 14:59:21,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:59:21,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2020-07-17 14:59:21,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105950969] [2020-07-17 14:59:21,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-07-17 14:59:21,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:59:21,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-07-17 14:59:21,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2020-07-17 14:59:21,555 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 93 states. [2020-07-17 14:59:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:59:29,283 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2020-07-17 14:59:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-07-17 14:59:29,284 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 407 [2020-07-17 14:59:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:59:29,286 INFO L225 Difference]: With dead ends: 423 [2020-07-17 14:59:29,286 INFO L226 Difference]: Without dead ends: 421 [2020-07-17 14:59:29,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5982 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=10131, Invalid=22811, Unknown=0, NotChecked=0, Total=32942 [2020-07-17 14:59:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-07-17 14:59:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-07-17 14:59:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-07-17 14:59:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2020-07-17 14:59:29,297 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 407 [2020-07-17 14:59:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:59:29,297 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2020-07-17 14:59:29,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-07-17 14:59:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2020-07-17 14:59:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-07-17 14:59:29,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:59:29,300 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:59:29,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-07-17 14:59:29,301 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:59:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:59:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash -495737810, now seen corresponding path program 45 times [2020-07-17 14:59:29,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:59:29,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760493504] [2020-07-17 14:59:29,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:59:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:59:34,555 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:59:34,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760493504] [2020-07-17 14:59:34,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:59:34,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2020-07-17 14:59:34,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211263396] [2020-07-17 14:59:34,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-07-17 14:59:34,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:59:34,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-07-17 14:59:34,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=6718, Unknown=0, NotChecked=0, Total=8930 [2020-07-17 14:59:34,565 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 95 states. [2020-07-17 14:59:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:59:43,285 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2020-07-17 14:59:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-07-17 14:59:43,286 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 416 [2020-07-17 14:59:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:59:43,289 INFO L225 Difference]: With dead ends: 432 [2020-07-17 14:59:43,289 INFO L226 Difference]: Without dead ends: 430 [2020-07-17 14:59:43,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6253 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=10586, Invalid=23824, Unknown=0, NotChecked=0, Total=34410 [2020-07-17 14:59:43,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-07-17 14:59:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-07-17 14:59:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-07-17 14:59:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2020-07-17 14:59:43,301 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 416 [2020-07-17 14:59:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:59:43,302 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2020-07-17 14:59:43,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-07-17 14:59:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2020-07-17 14:59:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-07-17 14:59:43,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:59:43,305 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:59:43,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-07-17 14:59:43,305 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:59:43,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:59:43,306 INFO L82 PathProgramCache]: Analyzing trace with hash -480921454, now seen corresponding path program 46 times [2020-07-17 14:59:43,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:59:43,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598798017] [2020-07-17 14:59:43,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:59:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:59:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:59:49,010 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:59:49,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598798017] [2020-07-17 14:59:49,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:59:49,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2020-07-17 14:59:49,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770289450] [2020-07-17 14:59:49,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-07-17 14:59:49,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:59:49,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-07-17 14:59:49,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=7005, Unknown=0, NotChecked=0, Total=9312 [2020-07-17 14:59:49,012 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 97 states. [2020-07-17 14:59:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:59:58,477 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2020-07-17 14:59:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-07-17 14:59:58,478 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 425 [2020-07-17 14:59:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:59:58,481 INFO L225 Difference]: With dead ends: 441 [2020-07-17 14:59:58,481 INFO L226 Difference]: Without dead ends: 439 [2020-07-17 14:59:58,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=11051, Invalid=24859, Unknown=0, NotChecked=0, Total=35910 [2020-07-17 14:59:58,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-07-17 14:59:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-07-17 14:59:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-17 14:59:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-07-17 14:59:58,497 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 425 [2020-07-17 14:59:58,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:59:58,497 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-07-17 14:59:58,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-07-17 14:59:58,498 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-07-17 14:59:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-07-17 14:59:58,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:59:58,501 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:59:58,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-07-17 14:59:58,501 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:59:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:59:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash -365275986, now seen corresponding path program 47 times [2020-07-17 14:59:58,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:59:58,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23868007] [2020-07-17 14:59:58,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:59:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:04,391 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:04,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23868007] [2020-07-17 15:00:04,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:04,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2020-07-17 15:00:04,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167489144] [2020-07-17 15:00:04,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-07-17 15:00:04,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:04,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-07-17 15:00:04,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2404, Invalid=7298, Unknown=0, NotChecked=0, Total=9702 [2020-07-17 15:00:04,393 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 99 states. [2020-07-17 15:00:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:15,283 INFO L93 Difference]: Finished difference Result 450 states and 450 transitions. [2020-07-17 15:00:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-07-17 15:00:15,283 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 434 [2020-07-17 15:00:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:15,286 INFO L225 Difference]: With dead ends: 450 [2020-07-17 15:00:15,286 INFO L226 Difference]: Without dead ends: 448 [2020-07-17 15:00:15,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6813 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=11526, Invalid=25916, Unknown=0, NotChecked=0, Total=37442 [2020-07-17 15:00:15,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-07-17 15:00:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-07-17 15:00:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-07-17 15:00:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-07-17 15:00:15,297 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 434 [2020-07-17 15:00:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:15,298 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-07-17 15:00:15,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-07-17 15:00:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-07-17 15:00:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-07-17 15:00:15,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:15,301 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:15,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-07-17 15:00:15,301 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:15,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:15,302 INFO L82 PathProgramCache]: Analyzing trace with hash -590505966, now seen corresponding path program 48 times [2020-07-17 15:00:15,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:15,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530062048] [2020-07-17 15:00:15,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:21,696 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:21,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530062048] [2020-07-17 15:00:21,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:21,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2020-07-17 15:00:21,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763266174] [2020-07-17 15:00:21,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-07-17 15:00:21,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:21,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-07-17 15:00:21,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=7597, Unknown=0, NotChecked=0, Total=10100 [2020-07-17 15:00:21,698 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 101 states. [2020-07-17 15:00:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:33,331 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-07-17 15:00:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-07-17 15:00:33,333 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 443 [2020-07-17 15:00:33,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:33,335 INFO L225 Difference]: With dead ends: 459 [2020-07-17 15:00:33,335 INFO L226 Difference]: Without dead ends: 457 [2020-07-17 15:00:33,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7102 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=12011, Invalid=26995, Unknown=0, NotChecked=0, Total=39006 [2020-07-17 15:00:33,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-07-17 15:00:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2020-07-17 15:00:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-07-17 15:00:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2020-07-17 15:00:33,348 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 443 [2020-07-17 15:00:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:33,348 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2020-07-17 15:00:33,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-07-17 15:00:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2020-07-17 15:00:33,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-07-17 15:00:33,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:33,351 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:33,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-07-17 15:00:33,351 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:33,351 INFO L82 PathProgramCache]: Analyzing trace with hash -991566546, now seen corresponding path program 49 times [2020-07-17 15:00:33,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:33,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739687134] [2020-07-17 15:00:33,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:00:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:00:40,996 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:00:40,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739687134] [2020-07-17 15:00:40,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:00:40,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2020-07-17 15:00:40,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723655221] [2020-07-17 15:00:40,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-07-17 15:00:40,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:00:40,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-07-17 15:00:40,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7902, Unknown=0, NotChecked=0, Total=10506 [2020-07-17 15:00:41,000 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 103 states. [2020-07-17 15:00:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:00:54,700 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2020-07-17 15:00:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-07-17 15:00:54,702 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 452 [2020-07-17 15:00:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:00:54,704 INFO L225 Difference]: With dead ends: 468 [2020-07-17 15:00:54,704 INFO L226 Difference]: Without dead ends: 466 [2020-07-17 15:00:54,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7397 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=12506, Invalid=28096, Unknown=0, NotChecked=0, Total=40602 [2020-07-17 15:00:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-07-17 15:00:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2020-07-17 15:00:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-07-17 15:00:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 464 transitions. [2020-07-17 15:00:54,716 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 464 transitions. Word has length 452 [2020-07-17 15:00:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:00:54,716 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 464 transitions. [2020-07-17 15:00:54,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-07-17 15:00:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 464 transitions. [2020-07-17 15:00:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-07-17 15:00:54,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:00:54,719 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:00:54,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-07-17 15:00:54,719 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:00:54,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:00:54,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1188861842, now seen corresponding path program 50 times [2020-07-17 15:00:54,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:00:54,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672218114] [2020-07-17 15:00:54,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:00:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:01:02,795 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:01:02,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672218114] [2020-07-17 15:01:02,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:01:02,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2020-07-17 15:01:02,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398017142] [2020-07-17 15:01:02,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-07-17 15:01:02,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:01:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-07-17 15:01:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=8213, Unknown=0, NotChecked=0, Total=10920 [2020-07-17 15:01:02,797 INFO L87 Difference]: Start difference. First operand 464 states and 464 transitions. Second operand 105 states. [2020-07-17 15:01:16,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:01:16,964 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2020-07-17 15:01:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-07-17 15:01:16,965 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 461 [2020-07-17 15:01:16,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:01:16,968 INFO L225 Difference]: With dead ends: 477 [2020-07-17 15:01:16,968 INFO L226 Difference]: Without dead ends: 475 [2020-07-17 15:01:16,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7698 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=13011, Invalid=29219, Unknown=0, NotChecked=0, Total=42230 [2020-07-17 15:01:16,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-07-17 15:01:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-07-17 15:01:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-07-17 15:01:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2020-07-17 15:01:16,981 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 461 [2020-07-17 15:01:16,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:01:16,982 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2020-07-17 15:01:16,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-07-17 15:01:16,982 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2020-07-17 15:01:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-07-17 15:01:16,985 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:01:16,985 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:01:16,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-07-17 15:01:16,986 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:01:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:01:16,986 INFO L82 PathProgramCache]: Analyzing trace with hash 385766830, now seen corresponding path program 51 times [2020-07-17 15:01:16,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:01:16,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781102766] [2020-07-17 15:01:16,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:01:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:01:25,324 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:01:25,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781102766] [2020-07-17 15:01:25,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:01:25,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2020-07-17 15:01:25,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383222733] [2020-07-17 15:01:25,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-07-17 15:01:25,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:01:25,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-07-17 15:01:25,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2812, Invalid=8530, Unknown=0, NotChecked=0, Total=11342 [2020-07-17 15:01:25,327 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 107 states. [2020-07-17 15:01:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:01:39,522 INFO L93 Difference]: Finished difference Result 486 states and 486 transitions. [2020-07-17 15:01:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-07-17 15:01:39,524 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 470 [2020-07-17 15:01:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:01:39,527 INFO L225 Difference]: With dead ends: 486 [2020-07-17 15:01:39,527 INFO L226 Difference]: Without dead ends: 484 [2020-07-17 15:01:39,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8005 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=13526, Invalid=30364, Unknown=0, NotChecked=0, Total=43890 [2020-07-17 15:01:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-07-17 15:01:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 482. [2020-07-17 15:01:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-07-17 15:01:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2020-07-17 15:01:39,539 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 470 [2020-07-17 15:01:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:01:39,541 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2020-07-17 15:01:39,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-07-17 15:01:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2020-07-17 15:01:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-07-17 15:01:39,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:01:39,544 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:01:39,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-07-17 15:01:39,546 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:01:39,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:01:39,546 INFO L82 PathProgramCache]: Analyzing trace with hash 368752402, now seen corresponding path program 52 times [2020-07-17 15:01:39,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:01:39,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904467187] [2020-07-17 15:01:39,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:01:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:01:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:01:48,671 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:01:48,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904467187] [2020-07-17 15:01:48,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:01:48,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2020-07-17 15:01:48,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551608214] [2020-07-17 15:01:48,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-07-17 15:01:48,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:01:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-07-17 15:01:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2919, Invalid=8853, Unknown=0, NotChecked=0, Total=11772 [2020-07-17 15:01:48,673 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand 109 states. [2020-07-17 15:02:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:02:06,169 INFO L93 Difference]: Finished difference Result 495 states and 495 transitions. [2020-07-17 15:02:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-07-17 15:02:06,171 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 479 [2020-07-17 15:02:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:02:06,174 INFO L225 Difference]: With dead ends: 495 [2020-07-17 15:02:06,174 INFO L226 Difference]: Without dead ends: 493 [2020-07-17 15:02:06,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8318 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=14051, Invalid=31531, Unknown=0, NotChecked=0, Total=45582 [2020-07-17 15:02:06,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-07-17 15:02:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-07-17 15:02:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-07-17 15:02:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2020-07-17 15:02:06,186 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 479 [2020-07-17 15:02:06,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:02:06,187 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2020-07-17 15:02:06,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-07-17 15:02:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2020-07-17 15:02:06,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-07-17 15:02:06,190 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:02:06,191 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:02:06,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-07-17 15:02:06,191 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:02:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:02:06,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1930143278, now seen corresponding path program 53 times [2020-07-17 15:02:06,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:02:06,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402163771] [2020-07-17 15:02:06,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:02:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:02:16,073 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:02:16,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402163771] [2020-07-17 15:02:16,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:02:16,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2020-07-17 15:02:16,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563845213] [2020-07-17 15:02:16,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-07-17 15:02:16,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:02:16,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-07-17 15:02:16,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3028, Invalid=9182, Unknown=0, NotChecked=0, Total=12210 [2020-07-17 15:02:16,075 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 111 states. [2020-07-17 15:02:34,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:02:34,636 INFO L93 Difference]: Finished difference Result 504 states and 504 transitions. [2020-07-17 15:02:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-07-17 15:02:34,639 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 488 [2020-07-17 15:02:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:02:34,643 INFO L225 Difference]: With dead ends: 504 [2020-07-17 15:02:34,643 INFO L226 Difference]: Without dead ends: 502 [2020-07-17 15:02:34,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8637 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=14586, Invalid=32720, Unknown=0, NotChecked=0, Total=47306 [2020-07-17 15:02:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-07-17 15:02:34,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2020-07-17 15:02:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-07-17 15:02:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 500 transitions. [2020-07-17 15:02:34,656 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 500 transitions. Word has length 488 [2020-07-17 15:02:34,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:02:34,656 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 500 transitions. [2020-07-17 15:02:34,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-07-17 15:02:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 500 transitions. [2020-07-17 15:02:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-07-17 15:02:34,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:02:34,659 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:02:34,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-07-17 15:02:34,659 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:02:34,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:02:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash 278918802, now seen corresponding path program 54 times [2020-07-17 15:02:34,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:02:34,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953541987] [2020-07-17 15:02:34,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:02:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:02:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:02:46,239 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:02:46,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953541987] [2020-07-17 15:02:46,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:02:46,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2020-07-17 15:02:46,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883279467] [2020-07-17 15:02:46,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-07-17 15:02:46,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:02:46,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-07-17 15:02:46,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=9517, Unknown=0, NotChecked=0, Total=12656 [2020-07-17 15:02:46,241 INFO L87 Difference]: Start difference. First operand 500 states and 500 transitions. Second operand 113 states. [2020-07-17 15:03:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:03:06,335 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2020-07-17 15:03:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2020-07-17 15:03:06,337 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 497 [2020-07-17 15:03:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:03:06,340 INFO L225 Difference]: With dead ends: 513 [2020-07-17 15:03:06,340 INFO L226 Difference]: Without dead ends: 511 [2020-07-17 15:03:06,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8962 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=15131, Invalid=33931, Unknown=0, NotChecked=0, Total=49062 [2020-07-17 15:03:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-07-17 15:03:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-07-17 15:03:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-07-17 15:03:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 509 transitions. [2020-07-17 15:03:06,351 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 509 transitions. Word has length 497 [2020-07-17 15:03:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:03:06,352 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 509 transitions. [2020-07-17 15:03:06,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 113 states. [2020-07-17 15:03:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 509 transitions. [2020-07-17 15:03:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-07-17 15:03:06,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:03:06,355 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:03:06,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-07-17 15:03:06,355 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:03:06,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:03:06,355 INFO L82 PathProgramCache]: Analyzing trace with hash -644491602, now seen corresponding path program 55 times [2020-07-17 15:03:06,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:03:06,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207183793] [2020-07-17 15:03:06,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:03:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:03:18,715 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:03:18,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207183793] [2020-07-17 15:03:18,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:03:18,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2020-07-17 15:03:18,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602030545] [2020-07-17 15:03:18,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-07-17 15:03:18,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:03:18,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-07-17 15:03:18,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=9858, Unknown=0, NotChecked=0, Total=13110 [2020-07-17 15:03:18,717 INFO L87 Difference]: Start difference. First operand 509 states and 509 transitions. Second operand 115 states. [2020-07-17 15:03:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:03:41,885 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2020-07-17 15:03:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-07-17 15:03:41,887 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 506 [2020-07-17 15:03:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:03:41,891 INFO L225 Difference]: With dead ends: 522 [2020-07-17 15:03:41,891 INFO L226 Difference]: Without dead ends: 520 [2020-07-17 15:03:41,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9293 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=15686, Invalid=35164, Unknown=0, NotChecked=0, Total=50850 [2020-07-17 15:03:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-07-17 15:03:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2020-07-17 15:03:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-07-17 15:03:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2020-07-17 15:03:41,903 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 506 [2020-07-17 15:03:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:03:41,903 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2020-07-17 15:03:41,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-07-17 15:03:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2020-07-17 15:03:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-07-17 15:03:41,906 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:03:41,906 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:03:41,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-07-17 15:03:41,906 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:03:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:03:41,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1329878546, now seen corresponding path program 56 times [2020-07-17 15:03:41,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:03:41,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11009974] [2020-07-17 15:03:41,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:03:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:03:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:03:56,067 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:03:56,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11009974] [2020-07-17 15:03:56,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:03:56,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2020-07-17 15:03:56,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30673540] [2020-07-17 15:03:56,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2020-07-17 15:03:56,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:03:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2020-07-17 15:03:56,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=10205, Unknown=0, NotChecked=0, Total=13572 [2020-07-17 15:03:56,069 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand 117 states. [2020-07-17 15:04:22,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:04:22,320 INFO L93 Difference]: Finished difference Result 531 states and 531 transitions. [2020-07-17 15:04:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2020-07-17 15:04:22,323 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 515 [2020-07-17 15:04:22,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:04:22,326 INFO L225 Difference]: With dead ends: 531 [2020-07-17 15:04:22,327 INFO L226 Difference]: Without dead ends: 529 [2020-07-17 15:04:22,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=16251, Invalid=36419, Unknown=0, NotChecked=0, Total=52670 [2020-07-17 15:04:22,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-07-17 15:04:22,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2020-07-17 15:04:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-07-17 15:04:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 527 transitions. [2020-07-17 15:04:22,339 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 527 transitions. Word has length 515 [2020-07-17 15:04:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:04:22,339 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 527 transitions. [2020-07-17 15:04:22,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 117 states. [2020-07-17 15:04:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 527 transitions. [2020-07-17 15:04:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-07-17 15:04:22,342 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:04:22,342 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:04:22,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-07-17 15:04:22,343 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:04:22,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:04:22,343 INFO L82 PathProgramCache]: Analyzing trace with hash 958719790, now seen corresponding path program 57 times [2020-07-17 15:04:22,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:04:22,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142608959] [2020-07-17 15:04:22,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:04:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:04:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:04:37,689 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:04:37,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142608959] [2020-07-17 15:04:37,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:04:37,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2020-07-17 15:04:37,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365397579] [2020-07-17 15:04:37,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2020-07-17 15:04:37,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:04:37,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2020-07-17 15:04:37,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3484, Invalid=10558, Unknown=0, NotChecked=0, Total=14042 [2020-07-17 15:04:37,691 INFO L87 Difference]: Start difference. First operand 527 states and 527 transitions. Second operand 119 states. [2020-07-17 15:05:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:05:05,795 INFO L93 Difference]: Finished difference Result 540 states and 540 transitions. [2020-07-17 15:05:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2020-07-17 15:05:05,799 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 524 [2020-07-17 15:05:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:05:05,803 INFO L225 Difference]: With dead ends: 540 [2020-07-17 15:05:05,803 INFO L226 Difference]: Without dead ends: 538 [2020-07-17 15:05:05,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9973 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=16826, Invalid=37696, Unknown=0, NotChecked=0, Total=54522 [2020-07-17 15:05:05,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-07-17 15:05:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2020-07-17 15:05:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-07-17 15:05:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 536 transitions. [2020-07-17 15:05:05,820 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 536 transitions. Word has length 524 [2020-07-17 15:05:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:05:05,821 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 536 transitions. [2020-07-17 15:05:05,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 119 states. [2020-07-17 15:05:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 536 transitions. [2020-07-17 15:05:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-07-17 15:05:05,825 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:05:05,826 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:05:05,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-07-17 15:05:05,826 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:05:05,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:05:05,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1134570094, now seen corresponding path program 58 times [2020-07-17 15:05:05,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:05:05,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807278296] [2020-07-17 15:05:05,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:05:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:05:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:05:22,781 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:05:22,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807278296] [2020-07-17 15:05:22,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:05:22,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2020-07-17 15:05:22,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015207916] [2020-07-17 15:05:22,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2020-07-17 15:05:22,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:05:22,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2020-07-17 15:05:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=10917, Unknown=0, NotChecked=0, Total=14520 [2020-07-17 15:05:22,783 INFO L87 Difference]: Start difference. First operand 536 states and 536 transitions. Second operand 121 states. [2020-07-17 15:05:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:05:52,503 INFO L93 Difference]: Finished difference Result 549 states and 549 transitions. [2020-07-17 15:05:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2020-07-17 15:05:52,507 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 533 [2020-07-17 15:05:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:05:52,510 INFO L225 Difference]: With dead ends: 549 [2020-07-17 15:05:52,510 INFO L226 Difference]: Without dead ends: 547 [2020-07-17 15:05:52,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10322 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=17411, Invalid=38995, Unknown=0, NotChecked=0, Total=56406 [2020-07-17 15:05:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-07-17 15:05:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2020-07-17 15:05:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-07-17 15:05:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 545 transitions. [2020-07-17 15:05:52,522 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 545 transitions. Word has length 533 [2020-07-17 15:05:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:05:52,523 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 545 transitions. [2020-07-17 15:05:52,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 121 states. [2020-07-17 15:05:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 545 transitions. [2020-07-17 15:05:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-07-17 15:05:52,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:05:52,526 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:05:52,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-07-17 15:05:52,526 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:05:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:05:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash -297740370, now seen corresponding path program 59 times [2020-07-17 15:05:52,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:05:52,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759816154] [2020-07-17 15:05:52,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:05:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:06:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:06:11,739 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:06:11,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759816154] [2020-07-17 15:06:11,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:06:11,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2020-07-17 15:06:11,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444877401] [2020-07-17 15:06:11,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2020-07-17 15:06:11,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:06:11,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2020-07-17 15:06:11,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3724, Invalid=11282, Unknown=0, NotChecked=0, Total=15006 [2020-07-17 15:06:11,741 INFO L87 Difference]: Start difference. First operand 545 states and 545 transitions. Second operand 123 states. [2020-07-17 15:06:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:06:43,395 INFO L93 Difference]: Finished difference Result 558 states and 558 transitions. [2020-07-17 15:06:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2020-07-17 15:06:43,398 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 542 [2020-07-17 15:06:43,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:06:43,402 INFO L225 Difference]: With dead ends: 558 [2020-07-17 15:06:43,402 INFO L226 Difference]: Without dead ends: 556 [2020-07-17 15:06:43,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10677 ImplicationChecksByTransitivity, 45.8s TimeCoverageRelationStatistics Valid=18006, Invalid=40316, Unknown=0, NotChecked=0, Total=58322 [2020-07-17 15:06:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-07-17 15:06:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2020-07-17 15:06:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-07-17 15:06:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 554 transitions. [2020-07-17 15:06:43,421 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 554 transitions. Word has length 542 [2020-07-17 15:06:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:06:43,421 INFO L479 AbstractCegarLoop]: Abstraction has 554 states and 554 transitions. [2020-07-17 15:06:43,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 123 states. [2020-07-17 15:06:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 554 transitions. [2020-07-17 15:06:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-07-17 15:06:43,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:06:43,427 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:06:43,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-07-17 15:06:43,427 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:06:43,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:06:43,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1804962542, now seen corresponding path program 60 times [2020-07-17 15:06:43,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:06:43,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443365638] [2020-07-17 15:06:43,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:06:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:07:04,059 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:07:04,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443365638] [2020-07-17 15:07:04,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:07:04,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2020-07-17 15:07:04,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041192284] [2020-07-17 15:07:04,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2020-07-17 15:07:04,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:07:04,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2020-07-17 15:07:04,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3847, Invalid=11653, Unknown=0, NotChecked=0, Total=15500 [2020-07-17 15:07:04,062 INFO L87 Difference]: Start difference. First operand 554 states and 554 transitions. Second operand 125 states. [2020-07-17 15:07:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:07:36,870 INFO L93 Difference]: Finished difference Result 567 states and 567 transitions. [2020-07-17 15:07:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2020-07-17 15:07:36,873 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 551 [2020-07-17 15:07:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:07:36,877 INFO L225 Difference]: With dead ends: 567 [2020-07-17 15:07:36,877 INFO L226 Difference]: Without dead ends: 565 [2020-07-17 15:07:36,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11038 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=18611, Invalid=41659, Unknown=0, NotChecked=0, Total=60270 [2020-07-17 15:07:36,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-07-17 15:07:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2020-07-17 15:07:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-07-17 15:07:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 563 transitions. [2020-07-17 15:07:36,892 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 563 transitions. Word has length 551 [2020-07-17 15:07:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:07:36,892 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 563 transitions. [2020-07-17 15:07:36,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 125 states. [2020-07-17 15:07:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 563 transitions. [2020-07-17 15:07:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-07-17 15:07:36,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:07:36,897 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:07:36,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-07-17 15:07:36,897 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:07:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:07:36,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1131522094, now seen corresponding path program 61 times [2020-07-17 15:07:36,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:07:36,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141108847] [2020-07-17 15:07:36,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:07:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:07:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:07:55,353 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:07:55,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141108847] [2020-07-17 15:07:55,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:07:55,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2020-07-17 15:07:55,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371505293] [2020-07-17 15:07:55,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2020-07-17 15:07:55,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:07:55,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2020-07-17 15:07:55,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3972, Invalid=12030, Unknown=0, NotChecked=0, Total=16002 [2020-07-17 15:07:55,355 INFO L87 Difference]: Start difference. First operand 563 states and 563 transitions. Second operand 127 states. [2020-07-17 15:08:26,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 15:08:26,690 INFO L93 Difference]: Finished difference Result 576 states and 576 transitions. [2020-07-17 15:08:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2020-07-17 15:08:26,693 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 560 [2020-07-17 15:08:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 15:08:26,696 INFO L225 Difference]: With dead ends: 576 [2020-07-17 15:08:26,696 INFO L226 Difference]: Without dead ends: 574 [2020-07-17 15:08:26,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11405 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=19226, Invalid=43024, Unknown=0, NotChecked=0, Total=62250 [2020-07-17 15:08:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-07-17 15:08:26,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-07-17 15:08:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-07-17 15:08:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 572 transitions. [2020-07-17 15:08:26,708 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 572 transitions. Word has length 560 [2020-07-17 15:08:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 15:08:26,708 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 572 transitions. [2020-07-17 15:08:26,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 127 states. [2020-07-17 15:08:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 572 transitions. [2020-07-17 15:08:26,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-07-17 15:08:26,711 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 15:08:26,711 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 15:08:26,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-07-17 15:08:26,712 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 15:08:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 15:08:26,712 INFO L82 PathProgramCache]: Analyzing trace with hash -438553454, now seen corresponding path program 62 times [2020-07-17 15:08:26,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 15:08:26,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567367163] [2020-07-17 15:08:26,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 15:08:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 15:08:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 15:08:46,118 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 15:08:46,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567367163] [2020-07-17 15:08:46,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 15:08:46,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2020-07-17 15:08:46,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412690591] [2020-07-17 15:08:46,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2020-07-17 15:08:46,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 15:08:46,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2020-07-17 15:08:46,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=12413, Unknown=0, NotChecked=0, Total=16512 [2020-07-17 15:08:46,120 INFO L87 Difference]: Start difference. First operand 572 states and 572 transitions. Second operand 129 states.