/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/heavy-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:58:39,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:58:39,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:58:39,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:58:39,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:58:39,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:58:39,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:58:39,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:58:39,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:58:39,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:58:39,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:58:39,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:58:39,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:58:39,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:58:39,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:58:39,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:58:39,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:58:39,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:58:39,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:58:39,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:58:39,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:58:39,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:58:39,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:58:39,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:58:39,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:58:39,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:58:39,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:58:39,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:58:39,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:58:39,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:58:39,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:58:39,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:58:39,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:58:39,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:58:39,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:58:39,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:58:39,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:58:39,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:58:39,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:58:39,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:58:39,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:58:39,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:58:39,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:58:39,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:58:39,670 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:58:39,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:58:39,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:58:39,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:58:39,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:58:39,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:58:39,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:58:39,672 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:58:39,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:58:39,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:58:39,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:58:39,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:58:39,967 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:58:39,968 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/heavy-2.c [2020-07-07 13:58:40,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368d2c1a8/55cd76e95ccf4720931fdbb15de4df77/FLAGc190ef331 [2020-07-07 13:58:40,508 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:58:40,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c [2020-07-07 13:58:40,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368d2c1a8/55cd76e95ccf4720931fdbb15de4df77/FLAGc190ef331 [2020-07-07 13:58:40,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368d2c1a8/55cd76e95ccf4720931fdbb15de4df77 [2020-07-07 13:58:40,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:58:40,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:58:40,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:40,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:58:40,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:58:40,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:40" (1/1) ... [2020-07-07 13:58:40,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a5108b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:40, skipping insertion in model container [2020-07-07 13:58:40,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:40" (1/1) ... [2020-07-07 13:58:40,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:58:40,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:58:41,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:41,110 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:58:41,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:41,281 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:58:41,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41 WrapperNode [2020-07-07 13:58:41,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:41,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:58:41,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:58:41,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:58:41,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (1/1) ... [2020-07-07 13:58:41,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (1/1) ... [2020-07-07 13:58:41,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (1/1) ... [2020-07-07 13:58:41,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (1/1) ... [2020-07-07 13:58:41,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (1/1) ... [2020-07-07 13:58:41,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (1/1) ... [2020-07-07 13:58:41,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (1/1) ... [2020-07-07 13:58:41,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:58:41,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:58:41,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:58:41,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:58:41,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:58:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:58:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:58:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:58:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:58:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:58:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:58:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:58:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:58:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:58:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-07-07 13:58:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:58:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:58:41,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:58:41,658 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 13:58:41,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:41 BoogieIcfgContainer [2020-07-07 13:58:41,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:58:41,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:58:41,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:58:41,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:58:41,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:58:40" (1/3) ... [2020-07-07 13:58:41,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39079fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:41, skipping insertion in model container [2020-07-07 13:58:41,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:41" (2/3) ... [2020-07-07 13:58:41,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39079fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:41, skipping insertion in model container [2020-07-07 13:58:41,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:41" (3/3) ... [2020-07-07 13:58:41,674 INFO L109 eAbstractionObserver]: Analyzing ICFG heavy-2.c [2020-07-07 13:58:41,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:58:41,696 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:58:41,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:58:41,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:58:41,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:58:41,741 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:58:41,741 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:58:41,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:58:41,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:58:41,742 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:58:41,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:58:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-07 13:58:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 13:58:41,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:41,778 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] [2020-07-07 13:58:41,779 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:41,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:41,786 INFO L82 PathProgramCache]: Analyzing trace with hash 245897808, now seen corresponding path program 1 times [2020-07-07 13:58:41,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:41,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718847874] [2020-07-07 13:58:41,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:42,048 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:42,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718847874] [2020-07-07 13:58:42,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:42,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:58:42,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872433395] [2020-07-07 13:58:42,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:58:42,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:42,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:58:42,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:58:42,071 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2020-07-07 13:58:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:42,251 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2020-07-07 13:58:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:58:42,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 13:58:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:42,265 INFO L225 Difference]: With dead ends: 98 [2020-07-07 13:58:42,265 INFO L226 Difference]: Without dead ends: 56 [2020-07-07 13:58:42,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:58:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-07 13:58:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2020-07-07 13:58:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-07 13:58:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-07-07 13:58:42,314 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 20 [2020-07-07 13:58:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:42,314 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-07-07 13:58:42,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:58:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-07-07 13:58:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 13:58:42,316 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:42,316 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] [2020-07-07 13:58:42,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:58:42,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:42,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:42,317 INFO L82 PathProgramCache]: Analyzing trace with hash 245856485, now seen corresponding path program 1 times [2020-07-07 13:58:42,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:42,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633011400] [2020-07-07 13:58:42,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:42,441 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:42,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633011400] [2020-07-07 13:58:42,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:42,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:58:42,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819881064] [2020-07-07 13:58:42,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:58:42,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:42,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:58:42,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:58:42,445 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-07-07 13:58:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:42,639 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-07-07 13:58:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:58:42,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-07-07 13:58:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:42,642 INFO L225 Difference]: With dead ends: 88 [2020-07-07 13:58:42,643 INFO L226 Difference]: Without dead ends: 85 [2020-07-07 13:58:42,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:58:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-07 13:58:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 40. [2020-07-07 13:58:42,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-07 13:58:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-07-07 13:58:42,657 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 20 [2020-07-07 13:58:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:42,658 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-07-07 13:58:42,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:58:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-07-07 13:58:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 13:58:42,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:42,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:42,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:58:42,660 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:42,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash 352436069, now seen corresponding path program 1 times [2020-07-07 13:58:42,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:42,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191912644] [2020-07-07 13:58:42,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:42,774 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:42,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191912644] [2020-07-07 13:58:42,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:42,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:58:42,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642556590] [2020-07-07 13:58:42,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:58:42,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:42,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:58:42,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:58:42,797 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-07-07 13:58:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:42,971 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-07-07 13:58:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:58:42,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-07 13:58:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:42,973 INFO L225 Difference]: With dead ends: 100 [2020-07-07 13:58:42,973 INFO L226 Difference]: Without dead ends: 78 [2020-07-07 13:58:42,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:58:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-07 13:58:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 41. [2020-07-07 13:58:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-07 13:58:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-07-07 13:58:42,983 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 26 [2020-07-07 13:58:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:42,985 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-07-07 13:58:42,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:58:42,986 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-07-07 13:58:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-07 13:58:42,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:42,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:42,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:58:42,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:42,988 INFO L82 PathProgramCache]: Analyzing trace with hash -80258988, now seen corresponding path program 1 times [2020-07-07 13:58:42,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:42,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781839851] [2020-07-07 13:58:42,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:43,090 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:43,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781839851] [2020-07-07 13:58:43,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:43,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:58:43,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145564734] [2020-07-07 13:58:43,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:58:43,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:43,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:58:43,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:58:43,092 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 4 states. [2020-07-07 13:58:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:43,206 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-07-07 13:58:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:58:43,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-07-07 13:58:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:43,209 INFO L225 Difference]: With dead ends: 79 [2020-07-07 13:58:43,209 INFO L226 Difference]: Without dead ends: 56 [2020-07-07 13:58:43,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:58:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-07 13:58:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2020-07-07 13:58:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-07 13:58:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-07-07 13:58:43,226 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2020-07-07 13:58:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:43,226 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-07-07 13:58:43,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:58:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-07-07 13:58:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:58:43,228 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:43,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:43,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:58:43,229 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:43,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1305862455, now seen corresponding path program 1 times [2020-07-07 13:58:43,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:43,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548943088] [2020-07-07 13:58:43,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:43,469 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:43,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548943088] [2020-07-07 13:58:43,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:43,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:58:43,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048728303] [2020-07-07 13:58:43,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:58:43,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:58:43,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:58:43,475 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2020-07-07 13:58:43,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:43,638 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-07-07 13:58:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:58:43,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-07-07 13:58:43,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:43,640 INFO L225 Difference]: With dead ends: 89 [2020-07-07 13:58:43,640 INFO L226 Difference]: Without dead ends: 65 [2020-07-07 13:58:43,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:58:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-07 13:58:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2020-07-07 13:58:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-07 13:58:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-07-07 13:58:43,649 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 41 [2020-07-07 13:58:43,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:43,650 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-07-07 13:58:43,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:58:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-07-07 13:58:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-07 13:58:43,652 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:43,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:43,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:58:43,652 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:43,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1372608588, now seen corresponding path program 2 times [2020-07-07 13:58:43,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:43,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248147325] [2020-07-07 13:58:43,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:43,913 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:43,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248147325] [2020-07-07 13:58:43,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:43,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:58:43,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606186285] [2020-07-07 13:58:43,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:58:43,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:43,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:58:43,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:58:43,916 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 8 states. [2020-07-07 13:58:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:44,157 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-07-07 13:58:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:58:44,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-07-07 13:58:44,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:44,158 INFO L225 Difference]: With dead ends: 107 [2020-07-07 13:58:44,159 INFO L226 Difference]: Without dead ends: 74 [2020-07-07 13:58:44,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:58:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-07 13:58:44,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2020-07-07 13:58:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-07 13:58:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-07-07 13:58:44,170 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 50 [2020-07-07 13:58:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:44,170 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-07-07 13:58:44,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:58:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-07-07 13:58:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-07 13:58:44,172 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:44,172 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:44,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:58:44,176 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1219437097, now seen corresponding path program 3 times [2020-07-07 13:58:44,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:44,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255116532] [2020-07-07 13:58:44,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:44,538 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:44,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255116532] [2020-07-07 13:58:44,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:44,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:58:44,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562735314] [2020-07-07 13:58:44,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:58:44,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:44,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:58:44,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:58:44,541 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 10 states. [2020-07-07 13:58:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:44,837 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2020-07-07 13:58:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:58:44,838 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-07-07 13:58:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:44,839 INFO L225 Difference]: With dead ends: 125 [2020-07-07 13:58:44,839 INFO L226 Difference]: Without dead ends: 83 [2020-07-07 13:58:44,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:58:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-07 13:58:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2020-07-07 13:58:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-07 13:58:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-07-07 13:58:44,853 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 59 [2020-07-07 13:58:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:44,858 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-07-07 13:58:44,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:58:44,859 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-07-07 13:58:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-07 13:58:44,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:44,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:44,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:58:44,861 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:44,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:44,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1194778388, now seen corresponding path program 4 times [2020-07-07 13:58:44,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:44,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075797564] [2020-07-07 13:58:44,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:45,391 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:45,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075797564] [2020-07-07 13:58:45,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:45,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:58:45,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560848170] [2020-07-07 13:58:45,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:58:45,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:45,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:58:45,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:58:45,396 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 12 states. [2020-07-07 13:58:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:45,831 INFO L93 Difference]: Finished difference Result 143 states and 148 transitions. [2020-07-07 13:58:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 13:58:45,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-07-07 13:58:45,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:45,833 INFO L225 Difference]: With dead ends: 143 [2020-07-07 13:58:45,833 INFO L226 Difference]: Without dead ends: 92 [2020-07-07 13:58:45,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-07-07 13:58:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-07 13:58:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2020-07-07 13:58:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-07 13:58:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-07-07 13:58:45,855 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 68 [2020-07-07 13:58:45,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:45,856 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-07-07 13:58:45,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:58:45,856 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-07-07 13:58:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-07-07 13:58:45,859 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:45,859 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:45,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:58:45,861 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1191054729, now seen corresponding path program 5 times [2020-07-07 13:58:45,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:45,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834861591] [2020-07-07 13:58:45,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:46,480 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:46,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834861591] [2020-07-07 13:58:46,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:46,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:58:46,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606725947] [2020-07-07 13:58:46,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:58:46,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:46,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:58:46,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:58:46,483 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 14 states. [2020-07-07 13:58:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:46,960 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-07-07 13:58:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 13:58:46,960 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 77 [2020-07-07 13:58:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:46,962 INFO L225 Difference]: With dead ends: 161 [2020-07-07 13:58:46,962 INFO L226 Difference]: Without dead ends: 101 [2020-07-07 13:58:46,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-07-07 13:58:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-07 13:58:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2020-07-07 13:58:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-07-07 13:58:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-07-07 13:58:46,983 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 77 [2020-07-07 13:58:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:46,984 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-07-07 13:58:46,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:58:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-07-07 13:58:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-07 13:58:46,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:46,987 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:46,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:58:46,987 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:46,989 INFO L82 PathProgramCache]: Analyzing trace with hash 123928180, now seen corresponding path program 6 times [2020-07-07 13:58:46,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:46,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218589928] [2020-07-07 13:58:46,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:47,965 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:47,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218589928] [2020-07-07 13:58:47,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:47,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 13:58:47,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790836857] [2020-07-07 13:58:47,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 13:58:47,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:47,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 13:58:47,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:58:47,967 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 16 states. [2020-07-07 13:58:48,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:48,647 INFO L93 Difference]: Finished difference Result 179 states and 184 transitions. [2020-07-07 13:58:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 13:58:48,648 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2020-07-07 13:58:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:48,649 INFO L225 Difference]: With dead ends: 179 [2020-07-07 13:58:48,649 INFO L226 Difference]: Without dead ends: 110 [2020-07-07 13:58:48,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2020-07-07 13:58:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-07 13:58:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2020-07-07 13:58:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-07 13:58:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2020-07-07 13:58:48,667 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 86 [2020-07-07 13:58:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:48,667 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2020-07-07 13:58:48,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 13:58:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2020-07-07 13:58:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-07-07 13:58:48,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:48,676 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:48,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:58:48,677 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:48,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:48,677 INFO L82 PathProgramCache]: Analyzing trace with hash -359457001, now seen corresponding path program 7 times [2020-07-07 13:58:48,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:48,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996301111] [2020-07-07 13:58:48,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:49,645 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:49,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996301111] [2020-07-07 13:58:49,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:49,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-07 13:58:49,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011211244] [2020-07-07 13:58:49,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 13:58:49,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:49,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 13:58:49,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:58:49,648 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 18 states. [2020-07-07 13:58:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:50,367 INFO L93 Difference]: Finished difference Result 197 states and 202 transitions. [2020-07-07 13:58:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 13:58:50,368 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 95 [2020-07-07 13:58:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:50,369 INFO L225 Difference]: With dead ends: 197 [2020-07-07 13:58:50,369 INFO L226 Difference]: Without dead ends: 119 [2020-07-07 13:58:50,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 13:58:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-07 13:58:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 105. [2020-07-07 13:58:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-07 13:58:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-07-07 13:58:50,380 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 95 [2020-07-07 13:58:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:50,380 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-07-07 13:58:50,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 13:58:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-07-07 13:58:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-07 13:58:50,381 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:50,382 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:50,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:58:50,382 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:50,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1447691732, now seen corresponding path program 8 times [2020-07-07 13:58:50,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:50,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992104869] [2020-07-07 13:58:50,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:51,543 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:51,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992104869] [2020-07-07 13:58:51,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:51,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-07 13:58:51,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986711106] [2020-07-07 13:58:51,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-07 13:58:51,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:51,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-07 13:58:51,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:58:51,545 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 20 states. [2020-07-07 13:58:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:52,431 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2020-07-07 13:58:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 13:58:52,432 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-07-07 13:58:52,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:52,433 INFO L225 Difference]: With dead ends: 215 [2020-07-07 13:58:52,433 INFO L226 Difference]: Without dead ends: 128 [2020-07-07 13:58:52,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 13:58:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-07 13:58:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 114. [2020-07-07 13:58:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-07 13:58:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-07-07 13:58:52,446 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 104 [2020-07-07 13:58:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:52,447 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-07-07 13:58:52,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-07 13:58:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-07-07 13:58:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-07-07 13:58:52,449 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:52,449 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:52,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:58:52,449 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:52,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:52,450 INFO L82 PathProgramCache]: Analyzing trace with hash 221143991, now seen corresponding path program 9 times [2020-07-07 13:58:52,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:52,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157120666] [2020-07-07 13:58:52,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:54,115 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:54,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157120666] [2020-07-07 13:58:54,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:54,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-07 13:58:54,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246877284] [2020-07-07 13:58:54,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-07 13:58:54,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:54,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-07 13:58:54,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-07-07 13:58:54,118 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 22 states. [2020-07-07 13:58:55,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:55,246 INFO L93 Difference]: Finished difference Result 233 states and 238 transitions. [2020-07-07 13:58:55,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-07 13:58:55,247 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 113 [2020-07-07 13:58:55,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:55,248 INFO L225 Difference]: With dead ends: 233 [2020-07-07 13:58:55,248 INFO L226 Difference]: Without dead ends: 137 [2020-07-07 13:58:55,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=1495, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 13:58:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-07-07 13:58:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2020-07-07 13:58:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-07 13:58:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-07-07 13:58:55,262 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 113 [2020-07-07 13:58:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:55,262 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-07-07 13:58:55,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-07 13:58:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-07-07 13:58:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-07 13:58:55,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:55,264 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:55,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:58:55,265 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:55,265 INFO L82 PathProgramCache]: Analyzing trace with hash 570553652, now seen corresponding path program 10 times [2020-07-07 13:58:55,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:55,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653469476] [2020-07-07 13:58:55,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:57,411 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:57,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653469476] [2020-07-07 13:58:57,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:57,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-07 13:58:57,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308321948] [2020-07-07 13:58:57,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-07 13:58:57,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:57,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-07 13:58:57,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-07-07 13:58:57,415 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 24 states. [2020-07-07 13:58:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:58,710 INFO L93 Difference]: Finished difference Result 251 states and 256 transitions. [2020-07-07 13:58:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-07 13:58:58,712 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 122 [2020-07-07 13:58:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:58,713 INFO L225 Difference]: With dead ends: 251 [2020-07-07 13:58:58,713 INFO L226 Difference]: Without dead ends: 146 [2020-07-07 13:58:58,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 13:58:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-07-07 13:58:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 132. [2020-07-07 13:58:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-07-07 13:58:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2020-07-07 13:58:58,724 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 122 [2020-07-07 13:58:58,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:58,724 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2020-07-07 13:58:58,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-07 13:58:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2020-07-07 13:58:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-07 13:58:58,726 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:58,726 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:58,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 13:58:58,726 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:58,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1417822121, now seen corresponding path program 11 times [2020-07-07 13:58:58,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:58,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853500504] [2020-07-07 13:58:58,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:00,320 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:00,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853500504] [2020-07-07 13:59:00,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:00,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-07-07 13:59:00,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774555792] [2020-07-07 13:59:00,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 13:59:00,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:00,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 13:59:00,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2020-07-07 13:59:00,322 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 26 states. [2020-07-07 13:59:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:01,763 INFO L93 Difference]: Finished difference Result 269 states and 274 transitions. [2020-07-07 13:59:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 13:59:01,763 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 131 [2020-07-07 13:59:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:01,765 INFO L225 Difference]: With dead ends: 269 [2020-07-07 13:59:01,765 INFO L226 Difference]: Without dead ends: 155 [2020-07-07 13:59:01,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=2177, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 13:59:01,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-07-07 13:59:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2020-07-07 13:59:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-07-07 13:59:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2020-07-07 13:59:01,778 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 131 [2020-07-07 13:59:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:01,779 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2020-07-07 13:59:01,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 13:59:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2020-07-07 13:59:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-07 13:59:01,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:01,780 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:01,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 13:59:01,782 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:01,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:01,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1059114132, now seen corresponding path program 12 times [2020-07-07 13:59:01,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:01,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224429661] [2020-07-07 13:59:01,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:04,185 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:04,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224429661] [2020-07-07 13:59:04,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:04,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-07-07 13:59:04,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076864805] [2020-07-07 13:59:04,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-07 13:59:04,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:04,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-07 13:59:04,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-07-07 13:59:04,189 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 28 states. [2020-07-07 13:59:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:06,245 INFO L93 Difference]: Finished difference Result 287 states and 292 transitions. [2020-07-07 13:59:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-07 13:59:06,246 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 140 [2020-07-07 13:59:06,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:06,247 INFO L225 Difference]: With dead ends: 287 [2020-07-07 13:59:06,247 INFO L226 Difference]: Without dead ends: 164 [2020-07-07 13:59:06,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=190, Invalid=2566, Unknown=0, NotChecked=0, Total=2756 [2020-07-07 13:59:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-07-07 13:59:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 150. [2020-07-07 13:59:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-07 13:59:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2020-07-07 13:59:06,260 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 140 [2020-07-07 13:59:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:06,260 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2020-07-07 13:59:06,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-07 13:59:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2020-07-07 13:59:06,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-07 13:59:06,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:06,262 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:06,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 13:59:06,263 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:06,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1179962121, now seen corresponding path program 13 times [2020-07-07 13:59:06,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:06,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566856372] [2020-07-07 13:59:06,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:12,190 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:12,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566856372] [2020-07-07 13:59:12,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:12,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-07-07 13:59:12,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963783302] [2020-07-07 13:59:12,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-07 13:59:12,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:12,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-07 13:59:12,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2020-07-07 13:59:12,193 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 30 states. [2020-07-07 13:59:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:14,202 INFO L93 Difference]: Finished difference Result 305 states and 310 transitions. [2020-07-07 13:59:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-07 13:59:14,204 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 149 [2020-07-07 13:59:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:14,205 INFO L225 Difference]: With dead ends: 305 [2020-07-07 13:59:14,205 INFO L226 Difference]: Without dead ends: 173 [2020-07-07 13:59:14,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=205, Invalid=2987, Unknown=0, NotChecked=0, Total=3192 [2020-07-07 13:59:14,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-07-07 13:59:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 159. [2020-07-07 13:59:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-07 13:59:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2020-07-07 13:59:14,219 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 149 [2020-07-07 13:59:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:14,220 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2020-07-07 13:59:14,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-07 13:59:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2020-07-07 13:59:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-07-07 13:59:14,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:14,222 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:14,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 13:59:14,222 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:14,223 INFO L82 PathProgramCache]: Analyzing trace with hash -927167500, now seen corresponding path program 14 times [2020-07-07 13:59:14,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:14,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167175355] [2020-07-07 13:59:14,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:22,758 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:22,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167175355] [2020-07-07 13:59:22,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:22,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-07-07 13:59:22,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550149721] [2020-07-07 13:59:22,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-07 13:59:22,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:22,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-07 13:59:22,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2020-07-07 13:59:22,761 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 32 states. [2020-07-07 13:59:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:25,062 INFO L93 Difference]: Finished difference Result 323 states and 328 transitions. [2020-07-07 13:59:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-07 13:59:25,068 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 158 [2020-07-07 13:59:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:25,069 INFO L225 Difference]: With dead ends: 323 [2020-07-07 13:59:25,069 INFO L226 Difference]: Without dead ends: 182 [2020-07-07 13:59:25,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=220, Invalid=3440, Unknown=0, NotChecked=0, Total=3660 [2020-07-07 13:59:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-07-07 13:59:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2020-07-07 13:59:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-07 13:59:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2020-07-07 13:59:25,085 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 158 [2020-07-07 13:59:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:25,085 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2020-07-07 13:59:25,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-07 13:59:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2020-07-07 13:59:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-07 13:59:25,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:25,087 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:25,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 13:59:25,089 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:25,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:25,090 INFO L82 PathProgramCache]: Analyzing trace with hash 895533463, now seen corresponding path program 15 times [2020-07-07 13:59:25,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:25,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343202386] [2020-07-07 13:59:25,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:00:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:00:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:00:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:00:02,566 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:00:02,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343202386] [2020-07-07 14:00:02,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:00:02,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-07-07 14:00:02,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331370877] [2020-07-07 14:00:02,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-07 14:00:02,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:00:02,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-07 14:00:02,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2020-07-07 14:00:02,568 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand 34 states. [2020-07-07 14:00:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:00:05,206 INFO L93 Difference]: Finished difference Result 341 states and 346 transitions. [2020-07-07 14:00:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-07 14:00:05,206 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 167 [2020-07-07 14:00:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:00:05,208 INFO L225 Difference]: With dead ends: 341 [2020-07-07 14:00:05,208 INFO L226 Difference]: Without dead ends: 191 [2020-07-07 14:00:05,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=235, Invalid=3925, Unknown=0, NotChecked=0, Total=4160 [2020-07-07 14:00:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-07-07 14:00:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 177. [2020-07-07 14:00:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-07-07 14:00:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2020-07-07 14:00:05,220 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 167 [2020-07-07 14:00:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:00:05,221 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2020-07-07 14:00:05,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-07 14:00:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2020-07-07 14:00:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-07-07 14:00:05,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:00:05,223 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:00:05,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 14:00:05,224 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:00:05,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:00:05,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2140458156, now seen corresponding path program 16 times [2020-07-07 14:00:05,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:00:05,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820043579] [2020-07-07 14:00:05,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:00:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:00:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:00:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:00:15,278 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:00:15,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820043579] [2020-07-07 14:00:15,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:00:15,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-07-07 14:00:15,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201751441] [2020-07-07 14:00:15,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-07 14:00:15,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:00:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-07 14:00:15,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 14:00:15,280 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 36 states. [2020-07-07 14:00:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:00:18,116 INFO L93 Difference]: Finished difference Result 359 states and 364 transitions. [2020-07-07 14:00:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-07 14:00:18,117 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 176 [2020-07-07 14:00:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:00:18,118 INFO L225 Difference]: With dead ends: 359 [2020-07-07 14:00:18,118 INFO L226 Difference]: Without dead ends: 200 [2020-07-07 14:00:18,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=250, Invalid=4442, Unknown=0, NotChecked=0, Total=4692 [2020-07-07 14:00:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-07-07 14:00:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 186. [2020-07-07 14:00:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-07-07 14:00:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2020-07-07 14:00:18,131 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 176 [2020-07-07 14:00:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:00:18,132 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2020-07-07 14:00:18,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-07 14:00:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2020-07-07 14:00:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-07 14:00:18,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:00:18,133 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:00:18,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-07 14:00:18,134 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:00:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:00:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash -976722377, now seen corresponding path program 17 times [2020-07-07 14:00:18,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:00:18,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227436447] [2020-07-07 14:00:18,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:00:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:00:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:00:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:00:41,366 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:00:41,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227436447] [2020-07-07 14:00:41,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:00:41,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-07-07 14:00:41,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275662201] [2020-07-07 14:00:41,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-07 14:00:41,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:00:41,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-07 14:00:41,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2020-07-07 14:00:41,369 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 38 states. [2020-07-07 14:00:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:00:44,522 INFO L93 Difference]: Finished difference Result 377 states and 382 transitions. [2020-07-07 14:00:44,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-07 14:00:44,523 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 185 [2020-07-07 14:00:44,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:00:44,525 INFO L225 Difference]: With dead ends: 377 [2020-07-07 14:00:44,525 INFO L226 Difference]: Without dead ends: 209 [2020-07-07 14:00:44,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=265, Invalid=4991, Unknown=0, NotChecked=0, Total=5256 [2020-07-07 14:00:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-07-07 14:00:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 195. [2020-07-07 14:00:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-07 14:00:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2020-07-07 14:00:44,550 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 185 [2020-07-07 14:00:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:00:44,551 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2020-07-07 14:00:44,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-07 14:00:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2020-07-07 14:00:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-07-07 14:00:44,552 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:00:44,553 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:00:44,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-07 14:00:44,553 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:00:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:00:44,554 INFO L82 PathProgramCache]: Analyzing trace with hash 776127156, now seen corresponding path program 18 times [2020-07-07 14:00:44,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:00:44,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351154867] [2020-07-07 14:00:44,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:00:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:00:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:00:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:00:58,755 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:00:58,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351154867] [2020-07-07 14:00:58,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:00:58,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2020-07-07 14:00:58,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755562682] [2020-07-07 14:00:58,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-07-07 14:00:58,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:00:58,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-07-07 14:00:58,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2020-07-07 14:00:58,758 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 40 states. [2020-07-07 14:01:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:02,311 INFO L93 Difference]: Finished difference Result 395 states and 400 transitions. [2020-07-07 14:01:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-07-07 14:01:02,316 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 194 [2020-07-07 14:01:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:02,317 INFO L225 Difference]: With dead ends: 395 [2020-07-07 14:01:02,317 INFO L226 Difference]: Without dead ends: 218 [2020-07-07 14:01:02,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=280, Invalid=5572, Unknown=0, NotChecked=0, Total=5852 [2020-07-07 14:01:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-07-07 14:01:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 204. [2020-07-07 14:01:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-07 14:01:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 206 transitions. [2020-07-07 14:01:02,331 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 206 transitions. Word has length 194 [2020-07-07 14:01:02,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:02,332 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 206 transitions. [2020-07-07 14:01:02,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-07-07 14:01:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 206 transitions. [2020-07-07 14:01:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-07 14:01:02,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:02,334 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:02,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-07 14:01:02,334 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:02,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1535910615, now seen corresponding path program 19 times [2020-07-07 14:01:02,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:02,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617776973] [2020-07-07 14:01:02,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:31,585 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:31,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617776973] [2020-07-07 14:01:31,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:31,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2020-07-07 14:01:31,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373360872] [2020-07-07 14:01:31,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-07 14:01:31,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-07 14:01:31,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1622, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 14:01:31,588 INFO L87 Difference]: Start difference. First operand 204 states and 206 transitions. Second operand 42 states. [2020-07-07 14:01:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:35,498 INFO L93 Difference]: Finished difference Result 413 states and 418 transitions. [2020-07-07 14:01:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-07 14:01:35,499 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 203 [2020-07-07 14:01:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:35,502 INFO L225 Difference]: With dead ends: 413 [2020-07-07 14:01:35,502 INFO L226 Difference]: Without dead ends: 227 [2020-07-07 14:01:35,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=295, Invalid=6185, Unknown=0, NotChecked=0, Total=6480 [2020-07-07 14:01:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-07 14:01:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 213. [2020-07-07 14:01:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-07-07 14:01:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2020-07-07 14:01:35,516 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 203 [2020-07-07 14:01:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:35,517 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2020-07-07 14:01:35,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-07 14:01:35,517 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2020-07-07 14:01:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-07 14:01:35,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:35,519 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:35,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-07 14:01:35,519 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:35,519 INFO L82 PathProgramCache]: Analyzing trace with hash 14236180, now seen corresponding path program 20 times [2020-07-07 14:01:35,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:35,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012029164] [2020-07-07 14:01:35,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:00,933 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:00,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012029164] [2020-07-07 14:02:00,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:00,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-07-07 14:02:00,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664122234] [2020-07-07 14:02:00,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-07 14:02:00,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:00,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-07 14:02:00,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1787, Unknown=0, NotChecked=0, Total=1892 [2020-07-07 14:02:00,935 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 44 states. [2020-07-07 14:02:05,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:05,197 INFO L93 Difference]: Finished difference Result 431 states and 436 transitions. [2020-07-07 14:02:05,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-07-07 14:02:05,198 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 212 [2020-07-07 14:02:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:05,200 INFO L225 Difference]: With dead ends: 431 [2020-07-07 14:02:05,200 INFO L226 Difference]: Without dead ends: 236 [2020-07-07 14:02:05,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=310, Invalid=6830, Unknown=0, NotChecked=0, Total=7140 [2020-07-07 14:02:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-07-07 14:02:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 222. [2020-07-07 14:02:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-07-07 14:02:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 224 transitions. [2020-07-07 14:02:05,213 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 224 transitions. Word has length 212 [2020-07-07 14:02:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:05,213 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 224 transitions. [2020-07-07 14:02:05,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-07 14:02:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 224 transitions. [2020-07-07 14:02:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-07-07 14:02:05,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:05,215 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:05,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-07 14:02:05,215 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:05,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:05,216 INFO L82 PathProgramCache]: Analyzing trace with hash -791283849, now seen corresponding path program 21 times [2020-07-07 14:02:05,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:05,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269458794] [2020-07-07 14:02:05,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:32,638 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:32,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269458794] [2020-07-07 14:02:32,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:32,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2020-07-07 14:02:32,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136077791] [2020-07-07 14:02:32,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-07 14:02:32,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:32,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-07 14:02:32,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1960, Unknown=0, NotChecked=0, Total=2070 [2020-07-07 14:02:32,640 INFO L87 Difference]: Start difference. First operand 222 states and 224 transitions. Second operand 46 states. [2020-07-07 14:02:37,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:37,376 INFO L93 Difference]: Finished difference Result 449 states and 454 transitions. [2020-07-07 14:02:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-07 14:02:37,376 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 221 [2020-07-07 14:02:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:37,378 INFO L225 Difference]: With dead ends: 449 [2020-07-07 14:02:37,378 INFO L226 Difference]: Without dead ends: 245 [2020-07-07 14:02:37,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=325, Invalid=7507, Unknown=0, NotChecked=0, Total=7832 [2020-07-07 14:02:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-07-07 14:02:37,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 231. [2020-07-07 14:02:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-07 14:02:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2020-07-07 14:02:37,392 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 221 [2020-07-07 14:02:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:37,392 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2020-07-07 14:02:37,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-07 14:02:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2020-07-07 14:02:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-07-07 14:02:37,394 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:37,394 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:37,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-07 14:02:37,394 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash -314271372, now seen corresponding path program 22 times [2020-07-07 14:02:37,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:37,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065078393] [2020-07-07 14:02:37,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:05,219 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:05,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065078393] [2020-07-07 14:05:05,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:05,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2020-07-07 14:05:05,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052847757] [2020-07-07 14:05:05,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-07 14:05:05,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:05,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-07 14:05:05,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2141, Unknown=0, NotChecked=0, Total=2256 [2020-07-07 14:05:05,221 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 48 states. [2020-07-07 14:05:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:10,441 INFO L93 Difference]: Finished difference Result 467 states and 472 transitions. [2020-07-07 14:05:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-07-07 14:05:10,444 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 230 [2020-07-07 14:05:10,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:10,446 INFO L225 Difference]: With dead ends: 467 [2020-07-07 14:05:10,446 INFO L226 Difference]: Without dead ends: 254 [2020-07-07 14:05:10,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=340, Invalid=8216, Unknown=0, NotChecked=0, Total=8556 [2020-07-07 14:05:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-07-07 14:05:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 240. [2020-07-07 14:05:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-07 14:05:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 242 transitions. [2020-07-07 14:05:10,462 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 242 transitions. Word has length 230 [2020-07-07 14:05:10,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:10,463 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 242 transitions. [2020-07-07 14:05:10,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-07 14:05:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 242 transitions. [2020-07-07 14:05:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-07 14:05:10,464 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:10,465 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:10,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-07-07 14:05:10,465 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1991252969, now seen corresponding path program 23 times [2020-07-07 14:05:10,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:10,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474299556] [2020-07-07 14:05:10,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:37,047 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:37,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474299556] [2020-07-07 14:05:37,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:37,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2020-07-07 14:05:37,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470764749] [2020-07-07 14:05:37,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-07 14:05:37,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:37,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-07 14:05:37,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2330, Unknown=0, NotChecked=0, Total=2450 [2020-07-07 14:05:37,049 INFO L87 Difference]: Start difference. First operand 240 states and 242 transitions. Second operand 50 states. [2020-07-07 14:05:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:43,070 INFO L93 Difference]: Finished difference Result 485 states and 490 transitions. [2020-07-07 14:05:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-07 14:05:43,072 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 239 [2020-07-07 14:05:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:43,074 INFO L225 Difference]: With dead ends: 485 [2020-07-07 14:05:43,074 INFO L226 Difference]: Without dead ends: 263 [2020-07-07 14:05:43,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=355, Invalid=8957, Unknown=0, NotChecked=0, Total=9312 [2020-07-07 14:05:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-07-07 14:05:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 249. [2020-07-07 14:05:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-07-07 14:05:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2020-07-07 14:05:43,089 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 239 [2020-07-07 14:05:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:43,090 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2020-07-07 14:05:43,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-07 14:05:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2020-07-07 14:05:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-07-07 14:05:43,091 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:43,091 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:43,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-07-07 14:05:43,091 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:43,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:43,091 INFO L82 PathProgramCache]: Analyzing trace with hash 253419732, now seen corresponding path program 24 times [2020-07-07 14:05:43,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:43,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486257851] [2020-07-07 14:05:43,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:28,525 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:28,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486257851] [2020-07-07 14:06:28,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:28,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2020-07-07 14:06:28,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341898008] [2020-07-07 14:06:28,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-07-07 14:06:28,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:28,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-07-07 14:06:28,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2020-07-07 14:06:28,527 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand 52 states. [2020-07-07 14:06:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:35,126 INFO L93 Difference]: Finished difference Result 503 states and 508 transitions. [2020-07-07 14:06:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-07-07 14:06:35,126 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 248 [2020-07-07 14:06:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:35,128 INFO L225 Difference]: With dead ends: 503 [2020-07-07 14:06:35,128 INFO L226 Difference]: Without dead ends: 272 [2020-07-07 14:06:35,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=370, Invalid=9730, Unknown=0, NotChecked=0, Total=10100 [2020-07-07 14:06:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-07-07 14:06:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 258. [2020-07-07 14:06:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-07 14:06:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 260 transitions. [2020-07-07 14:06:35,145 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 260 transitions. Word has length 248 [2020-07-07 14:06:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:35,146 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 260 transitions. [2020-07-07 14:06:35,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-07-07 14:06:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 260 transitions. [2020-07-07 14:06:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-07-07 14:06:35,147 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:35,148 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:35,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-07-07 14:06:35,148 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:35,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:35,148 INFO L82 PathProgramCache]: Analyzing trace with hash 304343223, now seen corresponding path program 25 times [2020-07-07 14:06:35,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:35,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988082175] [2020-07-07 14:06:35,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:28,557 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:28,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988082175] [2020-07-07 14:07:28,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:28,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2020-07-07 14:07:28,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598994388] [2020-07-07 14:07:28,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-07 14:07:28,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:28,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-07 14:07:28,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2732, Unknown=0, NotChecked=0, Total=2862 [2020-07-07 14:07:28,560 INFO L87 Difference]: Start difference. First operand 258 states and 260 transitions. Second operand 54 states. [2020-07-07 14:07:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:34,947 INFO L93 Difference]: Finished difference Result 521 states and 526 transitions. [2020-07-07 14:07:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-07 14:07:34,949 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 257 [2020-07-07 14:07:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:34,950 INFO L225 Difference]: With dead ends: 521 [2020-07-07 14:07:34,950 INFO L226 Difference]: Without dead ends: 281 [2020-07-07 14:07:34,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=385, Invalid=10535, Unknown=0, NotChecked=0, Total=10920 [2020-07-07 14:07:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-07-07 14:07:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 267. [2020-07-07 14:07:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-07-07 14:07:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 269 transitions. [2020-07-07 14:07:34,967 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 269 transitions. Word has length 257 [2020-07-07 14:07:34,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:34,968 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 269 transitions. [2020-07-07 14:07:34,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-07 14:07:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 269 transitions. [2020-07-07 14:07:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-07-07 14:07:34,970 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:34,970 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:34,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-07-07 14:07:34,970 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash 141692980, now seen corresponding path program 26 times [2020-07-07 14:07:34,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:34,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524104491] [2020-07-07 14:07:34,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:11:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:11:28,944 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:11:28,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524104491] [2020-07-07 14:11:28,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:11:28,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2020-07-07 14:11:28,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974392810] [2020-07-07 14:11:28,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-07 14:11:28,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:11:28,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-07 14:11:28,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2945, Unknown=0, NotChecked=0, Total=3080 [2020-07-07 14:11:28,946 INFO L87 Difference]: Start difference. First operand 267 states and 269 transitions. Second operand 56 states. [2020-07-07 14:11:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:11:36,070 INFO L93 Difference]: Finished difference Result 539 states and 544 transitions. [2020-07-07 14:11:36,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-07-07 14:11:36,071 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 266 [2020-07-07 14:11:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:11:36,073 INFO L225 Difference]: With dead ends: 539 [2020-07-07 14:11:36,073 INFO L226 Difference]: Without dead ends: 290 [2020-07-07 14:11:36,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=400, Invalid=11372, Unknown=0, NotChecked=0, Total=11772 [2020-07-07 14:11:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-07-07 14:11:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 276. [2020-07-07 14:11:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-07-07 14:11:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 278 transitions. [2020-07-07 14:11:36,090 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 278 transitions. Word has length 266 [2020-07-07 14:11:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:11:36,091 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 278 transitions. [2020-07-07 14:11:36,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-07 14:11:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 278 transitions. [2020-07-07 14:11:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-07-07 14:11:36,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:11:36,093 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:11:36,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-07-07 14:11:36,094 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:11:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:11:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1040448169, now seen corresponding path program 27 times [2020-07-07 14:11:36,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:11:36,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125642909] [2020-07-07 14:11:36,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY