/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o1000.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:42:37,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:42:37,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:42:37,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:42:37,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:42:37,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:42:37,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:42:37,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:42:37,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:42:37,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:42:37,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:42:37,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:42:37,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:42:37,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:42:37,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:42:37,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:42:37,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:42:37,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:42:37,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:42:37,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:42:37,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:42:37,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:42:37,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:42:37,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:42:37,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:42:37,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:42:37,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:42:37,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:42:37,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:42:37,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:42:37,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:42:37,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:42:37,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:42:37,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:42:37,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:42:37,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:42:37,682 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:42:37,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:42:37,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:42:37,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:42:37,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:42:37,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:42:37,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:42:37,683 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:42:38,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:42:38,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:42:38,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:42:38,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:42:38,195 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:42:38,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o1000.c [2020-11-07 00:42:38,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f809a2e63/5a96cf908b244c489d27a7e9d3b46f0a/FLAG12c9c81fd [2020-11-07 00:42:39,126 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:42:39,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o1000.c [2020-11-07 00:42:39,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f809a2e63/5a96cf908b244c489d27a7e9d3b46f0a/FLAG12c9c81fd [2020-11-07 00:42:39,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f809a2e63/5a96cf908b244c489d27a7e9d3b46f0a [2020-11-07 00:42:39,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:42:39,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:42:39,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:42:39,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:42:39,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:42:39,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fdb4534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39, skipping insertion in model container [2020-11-07 00:42:39,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:42:39,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:42:39,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:42:39,775 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:42:39,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:42:39,812 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:42:39,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39 WrapperNode [2020-11-07 00:42:39,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:42:39,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:42:39,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:42:39,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:42:39,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (1/1) ... [2020-11-07 00:42:39,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:42:39,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:42:39,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:42:39,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:42:39,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:42:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:42:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:42:39,945 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:42:39,945 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-07 00:42:39,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:42:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 00:42:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:42:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:42:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:42:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:42:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-07 00:42:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:42:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:42:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:42:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:42:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:42:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:42:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:42:40,434 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:42:40,435 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:42:40,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:42:40 BoogieIcfgContainer [2020-11-07 00:42:40,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:42:40,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:42:40,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:42:40,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:42:40,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:42:39" (1/3) ... [2020-11-07 00:42:40,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fe4041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:42:40, skipping insertion in model container [2020-11-07 00:42:40,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:39" (2/3) ... [2020-11-07 00:42:40,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fe4041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:42:40, skipping insertion in model container [2020-11-07 00:42:40,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:42:40" (3/3) ... [2020-11-07 00:42:40,470 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o1000.c [2020-11-07 00:42:40,493 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:42:40,499 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:42:40,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:42:40,566 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:42:40,566 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:42:40,566 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:42:40,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:42:40,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:42:40,567 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:42:40,567 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:42:40,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:42:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-07 00:42:40,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 00:42:40,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:40,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:40,611 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:40,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:40,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2039876327, now seen corresponding path program 1 times [2020-11-07 00:42:40,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:40,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516719784] [2020-11-07 00:42:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:40,757 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:41,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:42:41,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516719784] [2020-11-07 00:42:41,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:41,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:42:41,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281265222] [2020-11-07 00:42:41,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:42:41,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:41,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:42:41,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:42:41,295 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-11-07 00:42:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:41,676 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-11-07 00:42:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:42:41,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 00:42:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:41,691 INFO L225 Difference]: With dead ends: 50 [2020-11-07 00:42:41,691 INFO L226 Difference]: Without dead ends: 31 [2020-11-07 00:42:41,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:42:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-07 00:42:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-07 00:42:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-07 00:42:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-07 00:42:41,760 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2020-11-07 00:42:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:41,761 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-07 00:42:41,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:42:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-07 00:42:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 00:42:41,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:41,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:41,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:42:41,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1789799325, now seen corresponding path program 1 times [2020-11-07 00:42:41,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:41,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601819744] [2020-11-07 00:42:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:41,805 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:41,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 00:42:42,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601819744] [2020-11-07 00:42:42,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:42,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:42:42,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623524962] [2020-11-07 00:42:42,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:42:42,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:42,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:42:42,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:42:42,057 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2020-11-07 00:42:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:42,497 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-07 00:42:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 00:42:42,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-11-07 00:42:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:42,500 INFO L225 Difference]: With dead ends: 41 [2020-11-07 00:42:42,500 INFO L226 Difference]: Without dead ends: 35 [2020-11-07 00:42:42,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-11-07 00:42:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-07 00:42:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-07 00:42:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 00:42:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-07 00:42:42,517 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-11-07 00:42:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:42,536 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-07 00:42:42,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:42:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-07 00:42:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 00:42:42,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:42,538 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:42,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:42:42,539 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash 819538851, now seen corresponding path program 2 times [2020-11-07 00:42:42,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:42,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216326195] [2020-11-07 00:42:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:42,545 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:42,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:42,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 00:42:42,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216326195] [2020-11-07 00:42:42,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:42,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 00:42:42,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823675970] [2020-11-07 00:42:42,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 00:42:42,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:42,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 00:42:42,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:42:42,833 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2020-11-07 00:42:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:43,565 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-11-07 00:42:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 00:42:43,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-11-07 00:42:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:43,571 INFO L225 Difference]: With dead ends: 45 [2020-11-07 00:42:43,571 INFO L226 Difference]: Without dead ends: 39 [2020-11-07 00:42:43,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-07 00:42:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-07 00:42:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-07 00:42:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-07 00:42:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-07 00:42:43,604 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 39 [2020-11-07 00:42:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:43,605 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-07 00:42:43,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 00:42:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-07 00:42:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 00:42:43,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:43,612 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:43,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:42:43,613 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:43,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:43,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1214666029, now seen corresponding path program 3 times [2020-11-07 00:42:43,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:43,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556568278] [2020-11-07 00:42:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:43,625 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:43,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:43,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:43,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:43,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-07 00:42:43,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556568278] [2020-11-07 00:42:43,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:43,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 00:42:43,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380862061] [2020-11-07 00:42:43,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 00:42:43,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:43,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 00:42:43,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-07 00:42:43,987 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 12 states. [2020-11-07 00:42:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:45,004 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-11-07 00:42:45,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 00:42:45,005 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-11-07 00:42:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:45,007 INFO L225 Difference]: With dead ends: 49 [2020-11-07 00:42:45,007 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 00:42:45,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-11-07 00:42:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 00:42:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-07 00:42:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-07 00:42:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-11-07 00:42:45,024 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 46 [2020-11-07 00:42:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:45,025 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-11-07 00:42:45,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 00:42:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-11-07 00:42:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 00:42:45,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:45,027 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:45,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:42:45,027 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:45,028 INFO L82 PathProgramCache]: Analyzing trace with hash -461443027, now seen corresponding path program 4 times [2020-11-07 00:42:45,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:45,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147057164] [2020-11-07 00:42:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:45,032 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:45,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:45,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:45,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-07 00:42:45,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147057164] [2020-11-07 00:42:45,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:45,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 00:42:45,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268693761] [2020-11-07 00:42:45,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 00:42:45,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:45,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 00:42:45,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-11-07 00:42:45,402 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 14 states. [2020-11-07 00:42:46,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:46,520 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-11-07 00:42:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 00:42:46,521 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-11-07 00:42:46,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:46,523 INFO L225 Difference]: With dead ends: 53 [2020-11-07 00:42:46,523 INFO L226 Difference]: Without dead ends: 47 [2020-11-07 00:42:46,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2020-11-07 00:42:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-07 00:42:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-07 00:42:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-07 00:42:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-11-07 00:42:46,556 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 53 [2020-11-07 00:42:46,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:46,557 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-11-07 00:42:46,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 00:42:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-11-07 00:42:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-07 00:42:46,559 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:46,559 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:46,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:42:46,560 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1951577079, now seen corresponding path program 5 times [2020-11-07 00:42:46,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:46,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576717322] [2020-11-07 00:42:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:46,564 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:46,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:46,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:47,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-07 00:42:47,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576717322] [2020-11-07 00:42:47,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:47,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 00:42:47,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324245147] [2020-11-07 00:42:47,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 00:42:47,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:47,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 00:42:47,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-11-07 00:42:47,110 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2020-11-07 00:42:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:48,487 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-11-07 00:42:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 00:42:48,489 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-11-07 00:42:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:48,493 INFO L225 Difference]: With dead ends: 57 [2020-11-07 00:42:48,493 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 00:42:48,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 00:42:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 00:42:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-07 00:42:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 00:42:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-11-07 00:42:48,517 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 60 [2020-11-07 00:42:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:48,518 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-11-07 00:42:48,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 00:42:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-11-07 00:42:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 00:42:48,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:48,526 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:48,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:42:48,527 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:48,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1085586761, now seen corresponding path program 6 times [2020-11-07 00:42:48,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:48,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014829695] [2020-11-07 00:42:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:48,532 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:48,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:48,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:48,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:48,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-07 00:42:49,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014829695] [2020-11-07 00:42:49,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:49,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-11-07 00:42:49,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864912598] [2020-11-07 00:42:49,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 00:42:49,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:49,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 00:42:49,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-11-07 00:42:49,069 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 18 states. [2020-11-07 00:42:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:50,681 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-11-07 00:42:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 00:42:50,682 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-11-07 00:42:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:50,684 INFO L225 Difference]: With dead ends: 61 [2020-11-07 00:42:50,684 INFO L226 Difference]: Without dead ends: 55 [2020-11-07 00:42:50,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 00:42:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-07 00:42:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-07 00:42:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-07 00:42:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-11-07 00:42:50,712 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 67 [2020-11-07 00:42:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:50,715 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-11-07 00:42:50,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 00:42:50,716 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-11-07 00:42:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-07 00:42:50,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:50,717 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:50,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 00:42:50,720 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:50,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1506086719, now seen corresponding path program 7 times [2020-11-07 00:42:50,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:50,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683541343] [2020-11-07 00:42:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:50,726 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:50,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:50,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:51,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:51,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-07 00:42:51,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683541343] [2020-11-07 00:42:51,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:51,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-11-07 00:42:51,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572612089] [2020-11-07 00:42:51,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-07 00:42:51,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:51,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-07 00:42:51,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-11-07 00:42:51,322 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 20 states. [2020-11-07 00:42:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:53,325 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2020-11-07 00:42:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-07 00:42:53,326 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-11-07 00:42:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:53,328 INFO L225 Difference]: With dead ends: 65 [2020-11-07 00:42:53,328 INFO L226 Difference]: Without dead ends: 59 [2020-11-07 00:42:53,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=161, Invalid=1819, Unknown=0, NotChecked=0, Total=1980 [2020-11-07 00:42:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-07 00:42:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-07 00:42:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 00:42:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-11-07 00:42:53,346 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 74 [2020-11-07 00:42:53,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:53,346 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-11-07 00:42:53,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-07 00:42:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-11-07 00:42:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-07 00:42:53,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:53,348 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:53,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 00:42:53,348 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1924014913, now seen corresponding path program 8 times [2020-11-07 00:42:53,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:53,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556894630] [2020-11-07 00:42:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:53,351 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-07 00:42:54,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556894630] [2020-11-07 00:42:54,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:54,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-11-07 00:42:54,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277971732] [2020-11-07 00:42:54,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 00:42:54,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:54,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 00:42:54,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-11-07 00:42:54,048 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 22 states. [2020-11-07 00:42:56,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:56,360 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-11-07 00:42:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-07 00:42:56,361 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 81 [2020-11-07 00:42:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:56,363 INFO L225 Difference]: With dead ends: 69 [2020-11-07 00:42:56,363 INFO L226 Difference]: Without dead ends: 63 [2020-11-07 00:42:56,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=180, Invalid=2270, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 00:42:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-07 00:42:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-07 00:42:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-07 00:42:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-11-07 00:42:56,380 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 81 [2020-11-07 00:42:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:56,380 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-11-07 00:42:56,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 00:42:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-11-07 00:42:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 00:42:56,382 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:56,382 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:56,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 00:42:56,382 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1815934069, now seen corresponding path program 9 times [2020-11-07 00:42:56,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:56,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976733060] [2020-11-07 00:42:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:56,386 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:42:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-07 00:42:57,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976733060] [2020-11-07 00:42:57,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:42:57,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-11-07 00:42:57,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063622671] [2020-11-07 00:42:57,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-07 00:42:57,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:42:57,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-07 00:42:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-11-07 00:42:57,196 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 24 states. [2020-11-07 00:42:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:42:59,826 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-11-07 00:42:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-07 00:42:59,827 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 88 [2020-11-07 00:42:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:42:59,829 INFO L225 Difference]: With dead ends: 73 [2020-11-07 00:42:59,829 INFO L226 Difference]: Without dead ends: 67 [2020-11-07 00:42:59,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=199, Invalid=2771, Unknown=0, NotChecked=0, Total=2970 [2020-11-07 00:42:59,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-07 00:42:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-07 00:42:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-07 00:42:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-11-07 00:42:59,844 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 88 [2020-11-07 00:42:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:42:59,845 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-11-07 00:42:59,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-07 00:42:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-11-07 00:42:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-07 00:42:59,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:42:59,846 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:42:59,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 00:42:59,847 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:42:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:42:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1550347829, now seen corresponding path program 10 times [2020-11-07 00:42:59,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:42:59,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969883567] [2020-11-07 00:42:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:42:59,850 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:42:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:59,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:42:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:42:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:42:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-07 00:43:00,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969883567] [2020-11-07 00:43:00,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:00,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-11-07 00:43:00,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075667320] [2020-11-07 00:43:00,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-07 00:43:00,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:00,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-07 00:43:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-11-07 00:43:00,774 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 26 states. [2020-11-07 00:43:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:03,874 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2020-11-07 00:43:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 00:43:03,874 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 95 [2020-11-07 00:43:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:03,876 INFO L225 Difference]: With dead ends: 77 [2020-11-07 00:43:03,876 INFO L226 Difference]: Without dead ends: 71 [2020-11-07 00:43:03,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 00:43:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-07 00:43:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-07 00:43:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-07 00:43:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-11-07 00:43:03,894 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 95 [2020-11-07 00:43:03,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:03,895 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-11-07 00:43:03,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-07 00:43:03,895 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-11-07 00:43:03,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-07 00:43:03,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:03,896 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:03,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 00:43:03,897 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:03,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1156643755, now seen corresponding path program 11 times [2020-11-07 00:43:03,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:03,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671003854] [2020-11-07 00:43:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:03,902 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-07 00:43:04,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671003854] [2020-11-07 00:43:04,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:04,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-11-07 00:43:04,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565289301] [2020-11-07 00:43:04,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-07 00:43:04,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:04,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-07 00:43:04,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-11-07 00:43:04,977 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 28 states. [2020-11-07 00:43:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:08,474 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-11-07 00:43:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 00:43:08,475 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-11-07 00:43:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:08,477 INFO L225 Difference]: With dead ends: 81 [2020-11-07 00:43:08,477 INFO L226 Difference]: Without dead ends: 75 [2020-11-07 00:43:08,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=237, Invalid=3923, Unknown=0, NotChecked=0, Total=4160 [2020-11-07 00:43:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-07 00:43:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-07 00:43:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-07 00:43:08,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-11-07 00:43:08,494 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 102 [2020-11-07 00:43:08,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:08,494 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-11-07 00:43:08,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-07 00:43:08,495 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-11-07 00:43:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-07 00:43:08,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:08,496 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:08,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 00:43:08,497 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:08,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1249349205, now seen corresponding path program 12 times [2020-11-07 00:43:08,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:08,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337631116] [2020-11-07 00:43:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:08,500 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:08,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:08,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:08,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:09,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:09,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:09,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-11-07 00:43:09,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337631116] [2020-11-07 00:43:09,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:09,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-11-07 00:43:09,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061912272] [2020-11-07 00:43:09,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-07 00:43:09,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:09,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-07 00:43:09,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-11-07 00:43:09,632 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 30 states. [2020-11-07 00:43:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:13,441 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-11-07 00:43:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-07 00:43:13,442 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 109 [2020-11-07 00:43:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:13,444 INFO L225 Difference]: With dead ends: 85 [2020-11-07 00:43:13,444 INFO L226 Difference]: Without dead ends: 79 [2020-11-07 00:43:13,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 00:43:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-07 00:43:13,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-11-07 00:43:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-07 00:43:13,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-11-07 00:43:13,460 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 109 [2020-11-07 00:43:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:13,461 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-11-07 00:43:13,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-07 00:43:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-11-07 00:43:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-07 00:43:13,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:13,463 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:13,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 00:43:13,463 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:13,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:13,464 INFO L82 PathProgramCache]: Analyzing trace with hash 46324511, now seen corresponding path program 13 times [2020-11-07 00:43:13,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:13,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920441995] [2020-11-07 00:43:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:13,467 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:13,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:13,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:13,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:13,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:14,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:14,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:14,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:14,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-07 00:43:14,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920441995] [2020-11-07 00:43:14,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:14,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-11-07 00:43:14,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447687593] [2020-11-07 00:43:14,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-07 00:43:14,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:14,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-07 00:43:14,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-11-07 00:43:14,690 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 32 states. [2020-11-07 00:43:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:18,999 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-11-07 00:43:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 00:43:19,000 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2020-11-07 00:43:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:19,001 INFO L225 Difference]: With dead ends: 89 [2020-11-07 00:43:19,002 INFO L226 Difference]: Without dead ends: 83 [2020-11-07 00:43:19,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=275, Invalid=5275, Unknown=0, NotChecked=0, Total=5550 [2020-11-07 00:43:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-07 00:43:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-07 00:43:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-07 00:43:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-11-07 00:43:19,018 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2020-11-07 00:43:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:19,018 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-11-07 00:43:19,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-07 00:43:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-11-07 00:43:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-07 00:43:19,022 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:19,022 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:19,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 00:43:19,022 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:19,023 INFO L82 PathProgramCache]: Analyzing trace with hash 322836703, now seen corresponding path program 14 times [2020-11-07 00:43:19,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:19,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183585496] [2020-11-07 00:43:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:19,026 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:19,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:20,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:20,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-11-07 00:43:20,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183585496] [2020-11-07 00:43:20,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:20,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-11-07 00:43:20,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966250979] [2020-11-07 00:43:20,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-07 00:43:20,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:20,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-07 00:43:20,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 00:43:20,624 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 34 states. [2020-11-07 00:43:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:25,360 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-11-07 00:43:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-07 00:43:25,361 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 123 [2020-11-07 00:43:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:25,363 INFO L225 Difference]: With dead ends: 93 [2020-11-07 00:43:25,363 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 00:43:25,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=294, Invalid=6026, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 00:43:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 00:43:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-07 00:43:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 00:43:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-11-07 00:43:25,382 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 123 [2020-11-07 00:43:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:25,383 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-11-07 00:43:25,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-07 00:43:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-11-07 00:43:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-07 00:43:25,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:25,385 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:25,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 00:43:25,385 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:25,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:25,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1510117353, now seen corresponding path program 15 times [2020-11-07 00:43:25,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:25,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110442717] [2020-11-07 00:43:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:25,388 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:25,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-07 00:43:26,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110442717] [2020-11-07 00:43:26,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:26,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-11-07 00:43:26,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877095189] [2020-11-07 00:43:26,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-07 00:43:26,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:26,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-07 00:43:26,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 00:43:26,984 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 36 states. [2020-11-07 00:43:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:32,291 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-11-07 00:43:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-07 00:43:32,292 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 130 [2020-11-07 00:43:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:32,294 INFO L225 Difference]: With dead ends: 97 [2020-11-07 00:43:32,294 INFO L226 Difference]: Without dead ends: 91 [2020-11-07 00:43:32,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=313, Invalid=6827, Unknown=0, NotChecked=0, Total=7140 [2020-11-07 00:43:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-07 00:43:32,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-11-07 00:43:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 00:43:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-11-07 00:43:32,319 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 130 [2020-11-07 00:43:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:32,322 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-11-07 00:43:32,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-07 00:43:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-11-07 00:43:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-07 00:43:32,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:32,326 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:32,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 00:43:32,326 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1118097047, now seen corresponding path program 16 times [2020-11-07 00:43:32,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:32,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060420028] [2020-11-07 00:43:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:32,333 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:32,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:33,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:33,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:33,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-07 00:43:34,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060420028] [2020-11-07 00:43:34,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:34,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-11-07 00:43:34,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417082564] [2020-11-07 00:43:34,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-07 00:43:34,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:34,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-07 00:43:34,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 00:43:34,211 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 38 states. [2020-11-07 00:43:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:40,201 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-11-07 00:43:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-07 00:43:40,202 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 137 [2020-11-07 00:43:40,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:40,204 INFO L225 Difference]: With dead ends: 101 [2020-11-07 00:43:40,204 INFO L226 Difference]: Without dead ends: 95 [2020-11-07 00:43:40,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=332, Invalid=7678, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 00:43:40,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-07 00:43:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-07 00:43:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-07 00:43:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-11-07 00:43:40,222 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 137 [2020-11-07 00:43:40,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:40,222 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-11-07 00:43:40,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-07 00:43:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-11-07 00:43:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-11-07 00:43:40,223 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:40,224 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:40,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 00:43:40,224 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:40,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1483874995, now seen corresponding path program 17 times [2020-11-07 00:43:40,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:40,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305742032] [2020-11-07 00:43:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:40,227 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:41,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:41,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:41,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:42,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-07 00:43:42,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305742032] [2020-11-07 00:43:42,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:42,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2020-11-07 00:43:42,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302650237] [2020-11-07 00:43:42,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-07 00:43:42,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:42,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-07 00:43:42,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 00:43:42,596 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 40 states. [2020-11-07 00:43:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:49,083 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-11-07 00:43:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-07 00:43:49,084 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2020-11-07 00:43:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:49,086 INFO L225 Difference]: With dead ends: 105 [2020-11-07 00:43:49,086 INFO L226 Difference]: Without dead ends: 99 [2020-11-07 00:43:49,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=351, Invalid=8579, Unknown=0, NotChecked=0, Total=8930 [2020-11-07 00:43:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-07 00:43:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-11-07 00:43:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-07 00:43:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-11-07 00:43:49,103 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 144 [2020-11-07 00:43:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:49,103 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-11-07 00:43:49,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-07 00:43:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-11-07 00:43:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-07 00:43:49,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:49,105 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:49,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 00:43:49,105 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2076104691, now seen corresponding path program 18 times [2020-11-07 00:43:49,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:49,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531706736] [2020-11-07 00:43:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:49,109 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:50,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-11-07 00:43:51,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531706736] [2020-11-07 00:43:51,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:43:51,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2020-11-07 00:43:51,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126597308] [2020-11-07 00:43:51,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-07 00:43:51,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:43:51,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-07 00:43:51,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 00:43:51,266 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 42 states. [2020-11-07 00:43:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:43:58,367 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-11-07 00:43:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-07 00:43:58,369 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 151 [2020-11-07 00:43:58,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:43:58,370 INFO L225 Difference]: With dead ends: 109 [2020-11-07 00:43:58,370 INFO L226 Difference]: Without dead ends: 103 [2020-11-07 00:43:58,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=370, Invalid=9530, Unknown=0, NotChecked=0, Total=9900 [2020-11-07 00:43:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-07 00:43:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-11-07 00:43:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-07 00:43:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-11-07 00:43:58,383 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 151 [2020-11-07 00:43:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:43:58,384 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-11-07 00:43:58,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-07 00:43:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-11-07 00:43:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-11-07 00:43:58,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:43:58,385 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:43:58,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 00:43:58,386 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:43:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:43:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash -566914179, now seen corresponding path program 19 times [2020-11-07 00:43:58,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:43:58,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289636154] [2020-11-07 00:43:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:43:58,389 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:43:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:43:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:43:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:58,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:58,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:58,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:58,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:43:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:43:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:00,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:00,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:00,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-07 00:44:00,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289636154] [2020-11-07 00:44:00,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:44:00,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-11-07 00:44:00,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727218122] [2020-11-07 00:44:00,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-07 00:44:00,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:44:00,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-07 00:44:00,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 00:44:00,777 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 44 states. [2020-11-07 00:44:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:44:08,518 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2020-11-07 00:44:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-07 00:44:08,519 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 158 [2020-11-07 00:44:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:44:08,521 INFO L225 Difference]: With dead ends: 113 [2020-11-07 00:44:08,522 INFO L226 Difference]: Without dead ends: 107 [2020-11-07 00:44:08,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=389, Invalid=10531, Unknown=0, NotChecked=0, Total=10920 [2020-11-07 00:44:08,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-07 00:44:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-11-07 00:44:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-07 00:44:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-11-07 00:44:08,538 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 158 [2020-11-07 00:44:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:44:08,538 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-11-07 00:44:08,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-07 00:44:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-11-07 00:44:08,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-07 00:44:08,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:44:08,540 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:44:08,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 00:44:08,540 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:44:08,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:44:08,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1423510653, now seen corresponding path program 20 times [2020-11-07 00:44:08,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:44:08,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667807685] [2020-11-07 00:44:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:44:08,544 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:44:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:08,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:44:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:08,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:44:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:08,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:08,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:09,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:10,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:10,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-07 00:44:11,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667807685] [2020-11-07 00:44:11,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:44:11,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2020-11-07 00:44:11,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563279231] [2020-11-07 00:44:11,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-07 00:44:11,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:44:11,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-07 00:44:11,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-11-07 00:44:11,355 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 46 states. [2020-11-07 00:44:20,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:44:20,014 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-11-07 00:44:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-07 00:44:20,015 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 165 [2020-11-07 00:44:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:44:20,017 INFO L225 Difference]: With dead ends: 117 [2020-11-07 00:44:20,017 INFO L226 Difference]: Without dead ends: 111 [2020-11-07 00:44:20,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=408, Invalid=11582, Unknown=0, NotChecked=0, Total=11990 [2020-11-07 00:44:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-07 00:44:20,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-11-07 00:44:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-07 00:44:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-11-07 00:44:20,035 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 165 [2020-11-07 00:44:20,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:44:20,035 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-11-07 00:44:20,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-07 00:44:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-11-07 00:44:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-07 00:44:20,037 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:44:20,037 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:44:20,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-07 00:44:20,038 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:44:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:44:20,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1276059065, now seen corresponding path program 21 times [2020-11-07 00:44:20,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:44:20,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885422527] [2020-11-07 00:44:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:44:20,041 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:44:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:44:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:44:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:20,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:21,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:21,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:21,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:21,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:21,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:22,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:22,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:22,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:22,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-11-07 00:44:23,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885422527] [2020-11-07 00:44:23,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:44:23,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2020-11-07 00:44:23,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689851792] [2020-11-07 00:44:23,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-07 00:44:23,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:44:23,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-07 00:44:23,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 00:44:23,194 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 48 states. [2020-11-07 00:44:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:44:32,423 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2020-11-07 00:44:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-11-07 00:44:32,428 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 172 [2020-11-07 00:44:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:44:32,429 INFO L225 Difference]: With dead ends: 121 [2020-11-07 00:44:32,429 INFO L226 Difference]: Without dead ends: 115 [2020-11-07 00:44:32,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=427, Invalid=12683, Unknown=0, NotChecked=0, Total=13110 [2020-11-07 00:44:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-07 00:44:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-11-07 00:44:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-07 00:44:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-11-07 00:44:32,448 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 172 [2020-11-07 00:44:32,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:44:32,449 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-11-07 00:44:32,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-07 00:44:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-11-07 00:44:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-11-07 00:44:32,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:44:32,451 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:44:32,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-07 00:44:32,451 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:44:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:44:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2103849209, now seen corresponding path program 22 times [2020-11-07 00:44:32,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:44:32,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050091937] [2020-11-07 00:44:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:44:32,455 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:44:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:44:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:44:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:32,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:34,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:34,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:35,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-11-07 00:44:35,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050091937] [2020-11-07 00:44:35,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:44:35,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2020-11-07 00:44:35,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143096924] [2020-11-07 00:44:35,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-07 00:44:35,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:44:35,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-07 00:44:35,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 00:44:35,828 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 50 states. [2020-11-07 00:44:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:44:45,771 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2020-11-07 00:44:45,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-07 00:44:45,775 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 179 [2020-11-07 00:44:45,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:44:45,777 INFO L225 Difference]: With dead ends: 125 [2020-11-07 00:44:45,777 INFO L226 Difference]: Without dead ends: 119 [2020-11-07 00:44:45,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=446, Invalid=13834, Unknown=0, NotChecked=0, Total=14280 [2020-11-07 00:44:45,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-07 00:44:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-11-07 00:44:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-07 00:44:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-11-07 00:44:45,795 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 179 [2020-11-07 00:44:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:44:45,795 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-11-07 00:44:45,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-07 00:44:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-11-07 00:44:45,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-11-07 00:44:45,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:44:45,797 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:44:45,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-07 00:44:45,797 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:44:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:44:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash 717754129, now seen corresponding path program 23 times [2020-11-07 00:44:45,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:44:45,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481874966] [2020-11-07 00:44:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:44:45,801 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:44:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:44:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:44:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:46,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:47,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:47,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:47,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:47,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:48,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:44:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:44:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-11-07 00:44:49,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481874966] [2020-11-07 00:44:49,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:44:49,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2020-11-07 00:44:49,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469845144] [2020-11-07 00:44:49,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-07 00:44:49,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:44:49,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-07 00:44:49,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 00:44:49,245 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 52 states. [2020-11-07 00:44:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:44:59,997 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2020-11-07 00:44:59,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-11-07 00:44:59,998 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 186 [2020-11-07 00:44:59,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:00,000 INFO L225 Difference]: With dead ends: 129 [2020-11-07 00:45:00,000 INFO L226 Difference]: Without dead ends: 123 [2020-11-07 00:45:00,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=465, Invalid=15035, Unknown=0, NotChecked=0, Total=15500 [2020-11-07 00:45:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-07 00:45:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-11-07 00:45:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-07 00:45:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2020-11-07 00:45:00,017 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 186 [2020-11-07 00:45:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:00,018 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2020-11-07 00:45:00,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-07 00:45:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2020-11-07 00:45:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-11-07 00:45:00,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:00,020 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:45:00,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-07 00:45:00,020 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:00,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash -764338287, now seen corresponding path program 24 times [2020-11-07 00:45:00,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:00,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511024252] [2020-11-07 00:45:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:00,023 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:45:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:00,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:01,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:01,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:02,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:02,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-11-07 00:45:03,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511024252] [2020-11-07 00:45:03,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:03,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2020-11-07 00:45:03,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608106910] [2020-11-07 00:45:03,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-07 00:45:03,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:03,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-07 00:45:03,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 00:45:03,712 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 54 states. [2020-11-07 00:45:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:15,354 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2020-11-07 00:45:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-07 00:45:15,355 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 193 [2020-11-07 00:45:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:15,357 INFO L225 Difference]: With dead ends: 133 [2020-11-07 00:45:15,357 INFO L226 Difference]: Without dead ends: 127 [2020-11-07 00:45:15,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=484, Invalid=16286, Unknown=0, NotChecked=0, Total=16770 [2020-11-07 00:45:15,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-07 00:45:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-11-07 00:45:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-07 00:45:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-11-07 00:45:15,371 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 193 [2020-11-07 00:45:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:15,372 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-11-07 00:45:15,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-07 00:45:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-11-07 00:45:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-07 00:45:15,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:15,373 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:45:15,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-07 00:45:15,374 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:15,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1134618149, now seen corresponding path program 25 times [2020-11-07 00:45:15,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:15,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555183417] [2020-11-07 00:45:15,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:15,377 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:15,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:45:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:15,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:15,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:15,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:16,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:16,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:16,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:16,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:16,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:17,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:17,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:17,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:18,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-11-07 00:45:19,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555183417] [2020-11-07 00:45:19,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:19,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2020-11-07 00:45:19,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663880020] [2020-11-07 00:45:19,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-07 00:45:19,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-07 00:45:19,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2020-11-07 00:45:19,384 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 56 states. [2020-11-07 00:45:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:32,270 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2020-11-07 00:45:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-11-07 00:45:32,273 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 200 [2020-11-07 00:45:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:32,275 INFO L225 Difference]: With dead ends: 137 [2020-11-07 00:45:32,275 INFO L226 Difference]: Without dead ends: 131 [2020-11-07 00:45:32,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=503, Invalid=17587, Unknown=0, NotChecked=0, Total=18090 [2020-11-07 00:45:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-07 00:45:32,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-11-07 00:45:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-07 00:45:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-11-07 00:45:32,295 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 200 [2020-11-07 00:45:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:32,295 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-11-07 00:45:32,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-07 00:45:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-11-07 00:45:32,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-11-07 00:45:32,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:32,298 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:45:32,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-07 00:45:32,298 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash 89062939, now seen corresponding path program 26 times [2020-11-07 00:45:32,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:32,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935715098] [2020-11-07 00:45:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:32,302 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:45:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:33,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:33,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:33,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:33,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:33,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:34,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:34,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:34,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:34,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:36,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-11-07 00:45:36,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935715098] [2020-11-07 00:45:36,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:36,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2020-11-07 00:45:36,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435282051] [2020-11-07 00:45:36,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-07 00:45:36,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:36,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-07 00:45:36,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 00:45:36,819 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 58 states. [2020-11-07 00:45:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:51,218 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2020-11-07 00:45:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-11-07 00:45:51,220 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 207 [2020-11-07 00:45:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:51,221 INFO L225 Difference]: With dead ends: 141 [2020-11-07 00:45:51,222 INFO L226 Difference]: Without dead ends: 135 [2020-11-07 00:45:51,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3294 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=522, Invalid=18938, Unknown=0, NotChecked=0, Total=19460 [2020-11-07 00:45:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-07 00:45:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-11-07 00:45:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-07 00:45:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2020-11-07 00:45:51,238 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 207 [2020-11-07 00:45:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:51,239 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2020-11-07 00:45:51,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-07 00:45:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2020-11-07 00:45:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-11-07 00:45:51,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:51,241 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:45:51,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-07 00:45:51,241 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:51,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:51,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1428553051, now seen corresponding path program 27 times [2020-11-07 00:45:51,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:51,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552940776] [2020-11-07 00:45:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:51,245 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:45:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:53,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:53,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:53,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:55,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:45:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-11-07 00:45:56,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552940776] [2020-11-07 00:45:56,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:56,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2020-11-07 00:45:56,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646832475] [2020-11-07 00:45:56,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-07 00:45:56,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:56,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-07 00:45:56,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 00:45:56,268 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 60 states. [2020-11-07 00:46:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:11,703 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2020-11-07 00:46:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-11-07 00:46:11,704 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 214 [2020-11-07 00:46:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:11,706 INFO L225 Difference]: With dead ends: 145 [2020-11-07 00:46:11,706 INFO L226 Difference]: Without dead ends: 139 [2020-11-07 00:46:11,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3542 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=541, Invalid=20339, Unknown=0, NotChecked=0, Total=20880 [2020-11-07 00:46:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-07 00:46:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-11-07 00:46:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-07 00:46:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-11-07 00:46:11,725 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 214 [2020-11-07 00:46:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:11,726 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-11-07 00:46:11,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-07 00:46:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-11-07 00:46:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-11-07 00:46:11,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:11,728 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:46:11,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-07 00:46:11,728 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:11,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:11,729 INFO L82 PathProgramCache]: Analyzing trace with hash 799238821, now seen corresponding path program 28 times [2020-11-07 00:46:11,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:11,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289822233] [2020-11-07 00:46:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:11,732 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:46:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:13,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:13,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:13,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:13,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:13,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:14,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:14,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:14,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:16,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:16,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-11-07 00:46:17,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289822233] [2020-11-07 00:46:17,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:17,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2020-11-07 00:46:17,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802187904] [2020-11-07 00:46:17,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-11-07 00:46:17,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:17,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-11-07 00:46:17,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2020-11-07 00:46:17,221 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 62 states. [2020-11-07 00:46:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:33,829 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2020-11-07 00:46:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-11-07 00:46:33,830 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 221 [2020-11-07 00:46:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:33,835 INFO L225 Difference]: With dead ends: 149 [2020-11-07 00:46:33,835 INFO L226 Difference]: Without dead ends: 143 [2020-11-07 00:46:33,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3799 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=560, Invalid=21790, Unknown=0, NotChecked=0, Total=22350 [2020-11-07 00:46:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-07 00:46:33,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-11-07 00:46:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-07 00:46:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2020-11-07 00:46:33,856 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 221 [2020-11-07 00:46:33,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:33,857 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2020-11-07 00:46:33,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-11-07 00:46:33,857 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2020-11-07 00:46:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-11-07 00:46:33,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:33,859 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:46:33,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-07 00:46:33,859 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:33,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1596143249, now seen corresponding path program 29 times [2020-11-07 00:46:33,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:33,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223611563] [2020-11-07 00:46:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:33,868 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:46:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:35,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:35,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:35,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:36,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:37,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:38,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:38,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-11-07 00:46:39,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223611563] [2020-11-07 00:46:39,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:39,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2020-11-07 00:46:39,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679050308] [2020-11-07 00:46:39,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-07 00:46:39,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:39,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-07 00:46:39,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2020-11-07 00:46:39,566 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 64 states. [2020-11-07 00:46:57,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:57,209 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2020-11-07 00:46:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-11-07 00:46:57,211 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 228 [2020-11-07 00:46:57,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:57,212 INFO L225 Difference]: With dead ends: 153 [2020-11-07 00:46:57,213 INFO L226 Difference]: Without dead ends: 147 [2020-11-07 00:46:57,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4065 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=579, Invalid=23291, Unknown=0, NotChecked=0, Total=23870 [2020-11-07 00:46:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-07 00:46:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-11-07 00:46:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-07 00:46:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2020-11-07 00:46:57,233 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 228 [2020-11-07 00:46:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:57,233 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2020-11-07 00:46:57,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-07 00:46:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2020-11-07 00:46:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-11-07 00:46:57,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:57,235 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:46:57,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-07 00:46:57,236 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:57,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:57,236 INFO L82 PathProgramCache]: Analyzing trace with hash 425616687, now seen corresponding path program 30 times [2020-11-07 00:46:57,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:57,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750022670] [2020-11-07 00:46:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:57,240 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:57,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:57,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:46:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:57,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:58,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:58,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:58,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:58,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:59,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:46:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:00,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:00,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:00,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:01,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:01,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:02,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-11-07 00:47:03,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750022670] [2020-11-07 00:47:03,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:47:03,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2020-11-07 00:47:03,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034510322] [2020-11-07 00:47:03,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-11-07 00:47:03,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:47:03,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-11-07 00:47:03,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2020-11-07 00:47:03,601 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 66 states. [2020-11-07 00:47:23,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:47:23,695 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2020-11-07 00:47:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-11-07 00:47:23,697 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 235 [2020-11-07 00:47:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:47:23,699 INFO L225 Difference]: With dead ends: 157 [2020-11-07 00:47:23,699 INFO L226 Difference]: Without dead ends: 151 [2020-11-07 00:47:23,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=598, Invalid=24842, Unknown=0, NotChecked=0, Total=25440 [2020-11-07 00:47:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-07 00:47:23,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-11-07 00:47:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-07 00:47:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-11-07 00:47:23,720 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 235 [2020-11-07 00:47:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:47:23,720 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-11-07 00:47:23,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-11-07 00:47:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-11-07 00:47:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-11-07 00:47:23,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:47:23,722 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:47:23,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-07 00:47:23,723 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:47:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:47:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1368092217, now seen corresponding path program 31 times [2020-11-07 00:47:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:47:23,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938215916] [2020-11-07 00:47:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:47:23,727 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:47:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:47:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:47:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:24,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:24,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:25,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:25,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:26,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:26,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:27,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:27,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:27,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:28,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:28,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-11-07 00:47:31,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938215916] [2020-11-07 00:47:31,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:47:31,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2020-11-07 00:47:31,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431524397] [2020-11-07 00:47:31,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-11-07 00:47:31,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:47:31,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-11-07 00:47:31,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2020-11-07 00:47:31,036 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 68 states. [2020-11-07 00:47:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:47:53,712 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2020-11-07 00:47:53,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-11-07 00:47:53,714 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 242 [2020-11-07 00:47:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:47:53,716 INFO L225 Difference]: With dead ends: 161 [2020-11-07 00:47:53,716 INFO L226 Difference]: Without dead ends: 155 [2020-11-07 00:47:53,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=617, Invalid=26443, Unknown=0, NotChecked=0, Total=27060 [2020-11-07 00:47:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-07 00:47:53,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-11-07 00:47:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-07 00:47:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2020-11-07 00:47:53,740 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 242 [2020-11-07 00:47:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:47:53,740 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2020-11-07 00:47:53,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-11-07 00:47:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2020-11-07 00:47:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-11-07 00:47:53,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:47:53,742 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:47:53,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-07 00:47:53,742 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:47:53,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:47:53,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1645220423, now seen corresponding path program 32 times [2020-11-07 00:47:53,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:47:53,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782183906] [2020-11-07 00:47:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:47:53,746 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:47:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:53,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:47:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:47:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:55,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:56,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:56,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:56,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:56,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:58,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:59,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:47:59,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:47:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:00,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:00,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:01,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-11-07 00:48:02,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782183906] [2020-11-07 00:48:02,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:48:02,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2020-11-07 00:48:02,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525835933] [2020-11-07 00:48:02,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-11-07 00:48:02,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:48:02,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-11-07 00:48:02,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 00:48:02,458 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 70 states. [2020-11-07 00:48:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:48:25,165 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2020-11-07 00:48:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-11-07 00:48:25,166 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 249 [2020-11-07 00:48:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:48:25,167 INFO L225 Difference]: With dead ends: 165 [2020-11-07 00:48:25,167 INFO L226 Difference]: Without dead ends: 159 [2020-11-07 00:48:25,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4917 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=636, Invalid=28094, Unknown=0, NotChecked=0, Total=28730 [2020-11-07 00:48:25,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-07 00:48:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-11-07 00:48:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-07 00:48:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-11-07 00:48:25,189 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 249 [2020-11-07 00:48:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:48:25,190 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-11-07 00:48:25,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-11-07 00:48:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-11-07 00:48:25,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-11-07 00:48:25,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:48:25,192 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:48:25,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-07 00:48:25,192 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:48:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:48:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash 411693315, now seen corresponding path program 33 times [2020-11-07 00:48:25,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:48:25,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538951964] [2020-11-07 00:48:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:48:25,196 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:48:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:48:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:48:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:25,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:25,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:26,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:26,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:26,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:27,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:27,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:28,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:28,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:28,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:29,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:29,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:29,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:30,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-11-07 00:48:33,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538951964] [2020-11-07 00:48:33,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:48:33,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2020-11-07 00:48:33,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742463591] [2020-11-07 00:48:33,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-07 00:48:33,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:48:33,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-07 00:48:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2020-11-07 00:48:33,080 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 72 states. [2020-11-07 00:48:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:48:57,283 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2020-11-07 00:48:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-11-07 00:48:57,284 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 256 [2020-11-07 00:48:57,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:48:57,286 INFO L225 Difference]: With dead ends: 169 [2020-11-07 00:48:57,286 INFO L226 Difference]: Without dead ends: 163 [2020-11-07 00:48:57,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5219 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=655, Invalid=29795, Unknown=0, NotChecked=0, Total=30450 [2020-11-07 00:48:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-07 00:48:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-07 00:48:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-07 00:48:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-11-07 00:48:57,303 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 256 [2020-11-07 00:48:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:48:57,304 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-11-07 00:48:57,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-07 00:48:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-11-07 00:48:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-11-07 00:48:57,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:48:57,306 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:48:57,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-07 00:48:57,306 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:48:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:48:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash 206046275, now seen corresponding path program 34 times [2020-11-07 00:48:57,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:48:57,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870583380] [2020-11-07 00:48:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:48:57,310 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:48:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:57,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:48:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:57,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:48:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:57,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:57,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:57,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:59,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:48:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:59,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:00,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:00,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:00,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:01,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:02,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:02,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:03,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:03,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-11-07 00:49:06,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870583380] [2020-11-07 00:49:06,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:06,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2020-11-07 00:49:06,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133183712] [2020-11-07 00:49:06,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-11-07 00:49:06,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:06,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-11-07 00:49:06,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2020-11-07 00:49:06,157 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 74 states. [2020-11-07 00:49:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:32,085 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2020-11-07 00:49:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-11-07 00:49:32,086 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 263 [2020-11-07 00:49:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:32,088 INFO L225 Difference]: With dead ends: 173 [2020-11-07 00:49:32,088 INFO L226 Difference]: Without dead ends: 167 [2020-11-07 00:49:32,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5530 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=674, Invalid=31546, Unknown=0, NotChecked=0, Total=32220 [2020-11-07 00:49:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-07 00:49:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-11-07 00:49:32,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-07 00:49:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2020-11-07 00:49:32,105 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 263 [2020-11-07 00:49:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:32,105 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2020-11-07 00:49:32,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-11-07 00:49:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2020-11-07 00:49:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-11-07 00:49:32,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:32,107 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:49:32,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-07 00:49:32,107 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1711517235, now seen corresponding path program 35 times [2020-11-07 00:49:32,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:32,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376609021] [2020-11-07 00:49:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:32,110 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:49:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:32,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:32,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:32,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:33,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:33,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:33,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:34,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:34,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:35,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:35,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:36,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:36,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:38,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:38,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:38,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:39,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:39,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:49:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-11-07 00:49:41,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376609021] [2020-11-07 00:49:41,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:41,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2020-11-07 00:49:41,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625091527] [2020-11-07 00:49:41,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-07 00:49:41,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:41,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-07 00:49:41,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2020-11-07 00:49:41,699 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 76 states. [2020-11-07 00:50:10,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:10,134 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2020-11-07 00:50:10,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2020-11-07 00:50:10,135 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 270 [2020-11-07 00:50:10,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:10,137 INFO L225 Difference]: With dead ends: 177 [2020-11-07 00:50:10,137 INFO L226 Difference]: Without dead ends: 171 [2020-11-07 00:50:10,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5850 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=693, Invalid=33347, Unknown=0, NotChecked=0, Total=34040 [2020-11-07 00:50:10,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-07 00:50:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-11-07 00:50:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-07 00:50:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-11-07 00:50:10,154 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 270 [2020-11-07 00:50:10,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:10,155 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-11-07 00:50:10,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-07 00:50:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-11-07 00:50:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-11-07 00:50:10,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:10,157 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:10,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-07 00:50:10,157 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2032752435, now seen corresponding path program 36 times [2020-11-07 00:50:10,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:10,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570608491] [2020-11-07 00:50:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:10,161 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:10,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:50:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:11,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:11,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:12,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:12,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:12,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:13,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:13,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:14,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:14,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:15,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:16,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:17,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:18,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:18,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:19,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-11-07 00:50:20,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570608491] [2020-11-07 00:50:20,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:50:20,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2020-11-07 00:50:20,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822970783] [2020-11-07 00:50:20,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-11-07 00:50:20,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:50:20,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-11-07 00:50:20,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2020-11-07 00:50:20,823 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 78 states. [2020-11-07 00:50:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:55,409 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2020-11-07 00:50:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-11-07 00:50:55,411 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 277 [2020-11-07 00:50:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:55,414 INFO L225 Difference]: With dead ends: 181 [2020-11-07 00:50:55,414 INFO L226 Difference]: Without dead ends: 175 [2020-11-07 00:50:55,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6179 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=712, Invalid=35198, Unknown=0, NotChecked=0, Total=35910 [2020-11-07 00:50:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-07 00:50:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-11-07 00:50:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-11-07 00:50:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2020-11-07 00:50:55,439 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 277 [2020-11-07 00:50:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:55,440 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2020-11-07 00:50:55,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-11-07 00:50:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2020-11-07 00:50:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-11-07 00:50:55,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:55,442 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:55,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-07 00:50:55,443 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:55,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1652986007, now seen corresponding path program 37 times [2020-11-07 00:50:55,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:55,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743611613] [2020-11-07 00:50:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:55,447 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:55,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:50:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:56,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:56,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:56,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:58,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:59,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:50:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:00,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:00,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:01,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:01,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:02,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:03,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:05,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:06,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:06,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-11-07 00:51:07,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743611613] [2020-11-07 00:51:07,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:51:07,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2020-11-07 00:51:07,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700752497] [2020-11-07 00:51:07,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-11-07 00:51:07,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:51:07,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-11-07 00:51:07,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 00:51:07,752 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 80 states. [2020-11-07 00:51:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:51:47,213 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2020-11-07 00:51:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2020-11-07 00:51:47,215 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 284 [2020-11-07 00:51:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:51:47,217 INFO L225 Difference]: With dead ends: 185 [2020-11-07 00:51:47,217 INFO L226 Difference]: Without dead ends: 179 [2020-11-07 00:51:47,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6517 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=731, Invalid=37099, Unknown=0, NotChecked=0, Total=37830 [2020-11-07 00:51:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-07 00:51:47,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-11-07 00:51:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-07 00:51:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2020-11-07 00:51:47,258 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 284 [2020-11-07 00:51:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:51:47,259 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2020-11-07 00:51:47,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-11-07 00:51:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2020-11-07 00:51:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-11-07 00:51:47,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:51:47,262 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:51:47,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-07 00:51:47,262 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:51:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:51:47,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1670110039, now seen corresponding path program 38 times [2020-11-07 00:51:47,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:51:47,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500338808] [2020-11-07 00:51:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:51:47,267 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:51:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:47,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:51:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:47,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:51:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:47,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:48,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:48,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:50,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:51,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:51,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:52,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:53,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:53,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:55,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:55,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:57,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:57,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:57,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:51:59,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:51:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-11-07 00:52:00,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500338808] [2020-11-07 00:52:00,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:52:00,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2020-11-07 00:52:00,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59039874] [2020-11-07 00:52:00,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-07 00:52:00,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:52:00,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-07 00:52:00,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2020-11-07 00:52:00,598 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 82 states. [2020-11-07 00:52:38,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:52:38,387 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2020-11-07 00:52:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-11-07 00:52:38,389 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 291 [2020-11-07 00:52:38,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:52:38,390 INFO L225 Difference]: With dead ends: 189 [2020-11-07 00:52:38,390 INFO L226 Difference]: Without dead ends: 183 [2020-11-07 00:52:38,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6864 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=750, Invalid=39050, Unknown=0, NotChecked=0, Total=39800 [2020-11-07 00:52:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-07 00:52:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-11-07 00:52:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-11-07 00:52:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2020-11-07 00:52:38,416 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 291 [2020-11-07 00:52:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:52:38,416 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2020-11-07 00:52:38,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-07 00:52:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2020-11-07 00:52:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-11-07 00:52:38,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:52:38,419 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:52:38,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-07 00:52:38,419 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:52:38,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:52:38,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2025018015, now seen corresponding path program 39 times [2020-11-07 00:52:38,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:52:38,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659135018] [2020-11-07 00:52:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:52:38,424 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:52:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:38,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:52:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:52:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:39,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:39,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:40,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:40,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:41,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:41,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:41,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:42,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:43,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:44,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:45,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:45,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:46,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:47,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:49,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:52:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-11-07 00:52:52,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659135018] [2020-11-07 00:52:52,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:52:52,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2020-11-07 00:52:52,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337003495] [2020-11-07 00:52:52,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-11-07 00:52:52,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:52:52,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-11-07 00:52:52,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2020-11-07 00:52:52,531 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 84 states. [2020-11-07 00:53:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:53:34,473 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2020-11-07 00:53:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2020-11-07 00:53:34,475 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 298 [2020-11-07 00:53:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:53:34,476 INFO L225 Difference]: With dead ends: 193 [2020-11-07 00:53:34,477 INFO L226 Difference]: Without dead ends: 187 [2020-11-07 00:53:34,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7220 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=769, Invalid=41051, Unknown=0, NotChecked=0, Total=41820 [2020-11-07 00:53:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-07 00:53:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-11-07 00:53:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-07 00:53:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2020-11-07 00:53:34,500 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 298 [2020-11-07 00:53:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:53:34,500 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2020-11-07 00:53:34,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-11-07 00:53:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2020-11-07 00:53:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-11-07 00:53:34,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:53:34,503 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:53:34,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-07 00:53:34,503 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:53:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:53:34,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1948804127, now seen corresponding path program 40 times [2020-11-07 00:53:34,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:53:34,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267627505] [2020-11-07 00:53:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:53:34,508 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:53:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:34,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:53:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:53:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:35,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:35,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:35,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:36,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:37,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:38,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:38,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:39,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:39,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:39,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:41,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:43,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:44,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:53:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:53:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-11-07 00:53:49,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267627505] [2020-11-07 00:53:49,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:53:49,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2020-11-07 00:53:49,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697414775] [2020-11-07 00:53:49,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-11-07 00:53:49,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:53:49,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-11-07 00:53:49,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2020-11-07 00:53:49,534 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 86 states. [2020-11-07 00:54:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:54:36,822 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2020-11-07 00:54:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-11-07 00:54:36,823 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 305 [2020-11-07 00:54:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:54:36,825 INFO L225 Difference]: With dead ends: 197 [2020-11-07 00:54:36,826 INFO L226 Difference]: Without dead ends: 191 [2020-11-07 00:54:36,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7585 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=788, Invalid=43102, Unknown=0, NotChecked=0, Total=43890 [2020-11-07 00:54:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-07 00:54:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-11-07 00:54:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-11-07 00:54:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2020-11-07 00:54:36,845 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 305 [2020-11-07 00:54:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:54:36,845 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2020-11-07 00:54:36,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-11-07 00:54:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2020-11-07 00:54:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-11-07 00:54:36,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:54:36,848 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:54:36,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-07 00:54:36,848 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:54:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:54:36,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1173530667, now seen corresponding path program 41 times [2020-11-07 00:54:36,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:54:36,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140354868] [2020-11-07 00:54:36,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:54:36,852 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:54:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:54:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:54:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:37,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:37,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:37,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:38,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:39,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:40,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:40,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:40,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:43,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:44,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:45,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:46,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:46,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:47,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:47,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:48,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:49,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:49,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:50,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:51,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:54:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:54:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-11-07 00:54:53,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140354868] [2020-11-07 00:54:53,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:54:53,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2020-11-07 00:54:53,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837261923] [2020-11-07 00:54:53,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-11-07 00:54:53,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:54:53,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-11-07 00:54:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2020-11-07 00:54:53,655 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 88 states.