/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:26:05,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:26:05,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:26:05,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:26:05,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:26:05,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:26:05,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:26:05,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:26:05,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:26:05,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:26:05,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:26:05,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:26:05,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:26:05,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:26:05,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:26:05,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:26:05,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:26:05,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:26:05,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:26:05,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:26:05,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:26:05,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:26:05,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:26:05,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:26:05,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:26:05,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:26:05,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:26:05,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:26:05,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:26:05,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:26:05,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:26:05,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:26:05,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:26:05,221 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:26:05,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:26:05,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:26:05,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:26:05,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:26:05,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:26:05,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:26:05,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:26:05,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:26:05,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:26:05,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:26:05,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:26:05,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:26:05,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:26:05,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:26:05,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:26:05,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:26:05,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:26:05,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:26:05,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:26:05,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:26:05,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:26:05,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:26:05,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:26:05,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:26:05,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:26:05,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:26:05,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:26:05,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:26:05,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:26:05,688 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:26:05,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-21 10:26:05,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba8ba24f/c8077d13ff0a4b2b81a0f56555b8e389/FLAG0d7cd0f89 [2020-09-21 10:26:06,455 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:26:06,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-21 10:26:06,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba8ba24f/c8077d13ff0a4b2b81a0f56555b8e389/FLAG0d7cd0f89 [2020-09-21 10:26:06,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba8ba24f/c8077d13ff0a4b2b81a0f56555b8e389 [2020-09-21 10:26:06,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:26:06,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:26:06,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:26:06,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:26:06,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:26:06,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:26:06" (1/1) ... [2020-09-21 10:26:06,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b532f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:06, skipping insertion in model container [2020-09-21 10:26:06,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:26:06" (1/1) ... [2020-09-21 10:26:06,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:26:06,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:26:07,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:26:07,478 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:26:07,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:26:07,673 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:26:07,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07 WrapperNode [2020-09-21 10:26:07,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:26:07,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:26:07,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:26:07,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:26:07,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (1/1) ... [2020-09-21 10:26:07,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (1/1) ... [2020-09-21 10:26:07,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (1/1) ... [2020-09-21 10:26:07,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (1/1) ... [2020-09-21 10:26:07,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (1/1) ... [2020-09-21 10:26:07,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (1/1) ... [2020-09-21 10:26:07,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (1/1) ... [2020-09-21 10:26:07,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:26:07,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:26:07,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:26:07,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:26:07,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:26:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:26:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:26:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 10:26:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:26:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 10:26:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:26:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:26:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 10:26:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:26:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:26:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:26:09,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:26:09,441 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 10:26:09,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:26:09 BoogieIcfgContainer [2020-09-21 10:26:09,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:26:09,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:26:09,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:26:09,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:26:09,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:26:06" (1/3) ... [2020-09-21 10:26:09,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70da5202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:26:09, skipping insertion in model container [2020-09-21 10:26:09,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:07" (2/3) ... [2020-09-21 10:26:09,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70da5202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:26:09, skipping insertion in model container [2020-09-21 10:26:09,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:26:09" (3/3) ... [2020-09-21 10:26:09,460 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-21 10:26:09,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:26:09,483 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:26:09,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:26:09,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:26:09,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:26:09,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:26:09,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:26:09,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:26:09,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:26:09,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:26:09,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:26:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-09-21 10:26:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 10:26:09,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:09,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:09,573 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:09,580 INFO L82 PathProgramCache]: Analyzing trace with hash 406410443, now seen corresponding path program 1 times [2020-09-21 10:26:09,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:09,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747340252] [2020-09-21 10:26:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:10,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:26:10,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747340252] [2020-09-21 10:26:10,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:10,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:10,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510754739] [2020-09-21 10:26:10,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:26:10,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:26:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:10,107 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2020-09-21 10:26:13,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:13,187 INFO L93 Difference]: Finished difference Result 886 states and 1612 transitions. [2020-09-21 10:26:13,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:26:13,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-09-21 10:26:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:13,213 INFO L225 Difference]: With dead ends: 886 [2020-09-21 10:26:13,214 INFO L226 Difference]: Without dead ends: 564 [2020-09-21 10:26:13,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:26:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-09-21 10:26:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2020-09-21 10:26:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-09-21 10:26:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 861 transitions. [2020-09-21 10:26:13,340 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 861 transitions. Word has length 54 [2020-09-21 10:26:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:13,341 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 861 transitions. [2020-09-21 10:26:13,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:26:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 861 transitions. [2020-09-21 10:26:13,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 10:26:13,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:13,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:13,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:26:13,352 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:13,352 INFO L82 PathProgramCache]: Analyzing trace with hash -724645666, now seen corresponding path program 1 times [2020-09-21 10:26:13,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:13,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019552799] [2020-09-21 10:26:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:26:13,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019552799] [2020-09-21 10:26:13,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:13,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:26:13,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201703832] [2020-09-21 10:26:13,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:26:13,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:13,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:26:13,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:26:13,708 INFO L87 Difference]: Start difference. First operand 560 states and 861 transitions. Second operand 7 states. [2020-09-21 10:26:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:15,878 INFO L93 Difference]: Finished difference Result 1518 states and 2374 transitions. [2020-09-21 10:26:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:26:15,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-21 10:26:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:15,889 INFO L225 Difference]: With dead ends: 1518 [2020-09-21 10:26:15,889 INFO L226 Difference]: Without dead ends: 964 [2020-09-21 10:26:15,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:26:15,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-09-21 10:26:15,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 944. [2020-09-21 10:26:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-09-21 10:26:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1336 transitions. [2020-09-21 10:26:15,952 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1336 transitions. Word has length 148 [2020-09-21 10:26:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:15,953 INFO L479 AbstractCegarLoop]: Abstraction has 944 states and 1336 transitions. [2020-09-21 10:26:15,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:26:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1336 transitions. [2020-09-21 10:26:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-21 10:26:15,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:15,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:15,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:26:15,961 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:15,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2026240930, now seen corresponding path program 1 times [2020-09-21 10:26:15,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:15,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354279365] [2020-09-21 10:26:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:16,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:26:16,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354279365] [2020-09-21 10:26:16,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:16,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:26:16,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238058055] [2020-09-21 10:26:16,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:26:16,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:16,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:26:16,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:26:16,324 INFO L87 Difference]: Start difference. First operand 944 states and 1336 transitions. Second operand 8 states. [2020-09-21 10:26:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:18,490 INFO L93 Difference]: Finished difference Result 2490 states and 3798 transitions. [2020-09-21 10:26:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:26:18,494 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-09-21 10:26:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:18,510 INFO L225 Difference]: With dead ends: 2490 [2020-09-21 10:26:18,510 INFO L226 Difference]: Without dead ends: 1552 [2020-09-21 10:26:18,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:26:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2020-09-21 10:26:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1518. [2020-09-21 10:26:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1518 states. [2020-09-21 10:26:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2119 transitions. [2020-09-21 10:26:18,612 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2119 transitions. Word has length 194 [2020-09-21 10:26:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:18,614 INFO L479 AbstractCegarLoop]: Abstraction has 1518 states and 2119 transitions. [2020-09-21 10:26:18,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:26:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2119 transitions. [2020-09-21 10:26:18,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-21 10:26:18,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:18,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:18,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:26:18,623 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:18,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1200176176, now seen corresponding path program 1 times [2020-09-21 10:26:18,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:18,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090762619] [2020-09-21 10:26:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-21 10:26:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 94 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 10:26:19,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090762619] [2020-09-21 10:26:19,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:19,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 10:26:19,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579124352] [2020-09-21 10:26:19,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:26:19,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:19,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:26:19,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:26:19,020 INFO L87 Difference]: Start difference. First operand 1518 states and 2119 transitions. Second operand 8 states. [2020-09-21 10:26:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:21,011 INFO L93 Difference]: Finished difference Result 3412 states and 4693 transitions. [2020-09-21 10:26:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:26:21,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-21 10:26:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:21,027 INFO L225 Difference]: With dead ends: 3412 [2020-09-21 10:26:21,028 INFO L226 Difference]: Without dead ends: 1900 [2020-09-21 10:26:21,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:26:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-09-21 10:26:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1890. [2020-09-21 10:26:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-09-21 10:26:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2517 transitions. [2020-09-21 10:26:21,125 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2517 transitions. Word has length 213 [2020-09-21 10:26:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:21,125 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 2517 transitions. [2020-09-21 10:26:21,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:26:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2517 transitions. [2020-09-21 10:26:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-09-21 10:26:21,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:21,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:21,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:26:21,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1683146711, now seen corresponding path program 1 times [2020-09-21 10:26:21,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:21,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916954954] [2020-09-21 10:26:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:21,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 10:26:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:21,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-09-21 10:26:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 175 proven. 194 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 10:26:21,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916954954] [2020-09-21 10:26:21,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:21,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:26:21,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817604735] [2020-09-21 10:26:21,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:26:21,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:21,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:26:21,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:26:21,975 INFO L87 Difference]: Start difference. First operand 1890 states and 2517 transitions. Second operand 9 states. [2020-09-21 10:26:25,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:25,068 INFO L93 Difference]: Finished difference Result 3677 states and 4968 transitions. [2020-09-21 10:26:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:26:25,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 297 [2020-09-21 10:26:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:25,081 INFO L225 Difference]: With dead ends: 3677 [2020-09-21 10:26:25,081 INFO L226 Difference]: Without dead ends: 1930 [2020-09-21 10:26:25,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:26:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2020-09-21 10:26:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1882. [2020-09-21 10:26:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2020-09-21 10:26:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2280 transitions. [2020-09-21 10:26:25,145 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2280 transitions. Word has length 297 [2020-09-21 10:26:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:25,146 INFO L479 AbstractCegarLoop]: Abstraction has 1882 states and 2280 transitions. [2020-09-21 10:26:25,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:26:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2280 transitions. [2020-09-21 10:26:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-09-21 10:26:25,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:25,157 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:25,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:26:25,158 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:25,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:25,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1242283415, now seen corresponding path program 1 times [2020-09-21 10:26:25,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:25,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334940203] [2020-09-21 10:26:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:25,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:25,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-21 10:26:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 414 proven. 11 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-09-21 10:26:26,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334940203] [2020-09-21 10:26:26,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:26,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:26:26,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290045521] [2020-09-21 10:26:26,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:26:26,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:26,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:26:26,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:26:26,016 INFO L87 Difference]: Start difference. First operand 1882 states and 2280 transitions. Second operand 9 states. [2020-09-21 10:26:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:31,499 INFO L93 Difference]: Finished difference Result 5238 states and 6410 transitions. [2020-09-21 10:26:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-21 10:26:31,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 432 [2020-09-21 10:26:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:31,517 INFO L225 Difference]: With dead ends: 5238 [2020-09-21 10:26:31,517 INFO L226 Difference]: Without dead ends: 3356 [2020-09-21 10:26:31,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2020-09-21 10:26:31,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2020-09-21 10:26:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 2438. [2020-09-21 10:26:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2438 states. [2020-09-21 10:26:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 2779 transitions. [2020-09-21 10:26:31,602 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 2779 transitions. Word has length 432 [2020-09-21 10:26:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:31,603 INFO L479 AbstractCegarLoop]: Abstraction has 2438 states and 2779 transitions. [2020-09-21 10:26:31,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:26:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 2779 transitions. [2020-09-21 10:26:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-09-21 10:26:31,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:31,646 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:31,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:26:31,647 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1681885400, now seen corresponding path program 1 times [2020-09-21 10:26:31,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:31,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533045649] [2020-09-21 10:26:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:31,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:31,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:32,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:32,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-21 10:26:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-21 10:26:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 638 proven. 209 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-09-21 10:26:32,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533045649] [2020-09-21 10:26:32,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:32,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:26:32,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808159] [2020-09-21 10:26:32,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:26:32,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:26:32,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:26:32,940 INFO L87 Difference]: Start difference. First operand 2438 states and 2779 transitions. Second operand 10 states. [2020-09-21 10:26:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:36,584 INFO L93 Difference]: Finished difference Result 5701 states and 6650 transitions. [2020-09-21 10:26:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 10:26:36,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 552 [2020-09-21 10:26:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:36,601 INFO L225 Difference]: With dead ends: 5701 [2020-09-21 10:26:36,601 INFO L226 Difference]: Without dead ends: 3400 [2020-09-21 10:26:36,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:26:36,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2020-09-21 10:26:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3174. [2020-09-21 10:26:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3174 states. [2020-09-21 10:26:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 3494 transitions. [2020-09-21 10:26:36,684 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 3494 transitions. Word has length 552 [2020-09-21 10:26:36,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:36,685 INFO L479 AbstractCegarLoop]: Abstraction has 3174 states and 3494 transitions. [2020-09-21 10:26:36,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:26:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 3494 transitions. [2020-09-21 10:26:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-09-21 10:26:36,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:36,702 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:36,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:26:36,702 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash 60264982, now seen corresponding path program 1 times [2020-09-21 10:26:36,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:36,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603048361] [2020-09-21 10:26:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:37,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-09-21 10:26:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 415 proven. 136 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-09-21 10:26:37,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603048361] [2020-09-21 10:26:37,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:37,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:26:37,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691825287] [2020-09-21 10:26:37,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:26:37,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:37,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:26:37,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:26:37,856 INFO L87 Difference]: Start difference. First operand 3174 states and 3494 transitions. Second operand 10 states. [2020-09-21 10:26:38,429 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-09-21 10:26:39,234 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-09-21 10:26:40,033 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-09-21 10:26:40,600 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-09-21 10:26:40,771 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-09-21 10:26:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:41,433 INFO L93 Difference]: Finished difference Result 5994 states and 6641 transitions. [2020-09-21 10:26:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-21 10:26:41,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 585 [2020-09-21 10:26:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:41,446 INFO L225 Difference]: With dead ends: 5994 [2020-09-21 10:26:41,446 INFO L226 Difference]: Without dead ends: 3192 [2020-09-21 10:26:41,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2020-09-21 10:26:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2020-09-21 10:26:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3178. [2020-09-21 10:26:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-09-21 10:26:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 3485 transitions. [2020-09-21 10:26:41,524 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 3485 transitions. Word has length 585 [2020-09-21 10:26:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:41,525 INFO L479 AbstractCegarLoop]: Abstraction has 3178 states and 3485 transitions. [2020-09-21 10:26:41,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:26:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 3485 transitions. [2020-09-21 10:26:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2020-09-21 10:26:41,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:41,534 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:41,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:26:41,534 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:41,535 INFO L82 PathProgramCache]: Analyzing trace with hash 762745801, now seen corresponding path program 2 times [2020-09-21 10:26:41,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:41,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089652341] [2020-09-21 10:26:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:41,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-09-21 10:26:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:42,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-09-21 10:26:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 579 proven. 140 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2020-09-21 10:26:42,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089652341] [2020-09-21 10:26:42,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:42,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:26:42,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481322472] [2020-09-21 10:26:42,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:26:42,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:26:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:26:42,909 INFO L87 Difference]: Start difference. First operand 3178 states and 3485 transitions. Second operand 9 states. [2020-09-21 10:26:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:45,802 INFO L93 Difference]: Finished difference Result 6354 states and 6980 transitions. [2020-09-21 10:26:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:26:45,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 695 [2020-09-21 10:26:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:45,817 INFO L225 Difference]: With dead ends: 6354 [2020-09-21 10:26:45,817 INFO L226 Difference]: Without dead ends: 3364 [2020-09-21 10:26:45,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:26:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2020-09-21 10:26:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 3178. [2020-09-21 10:26:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-09-21 10:26:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 3483 transitions. [2020-09-21 10:26:45,898 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 3483 transitions. Word has length 695 [2020-09-21 10:26:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:45,899 INFO L479 AbstractCegarLoop]: Abstraction has 3178 states and 3483 transitions. [2020-09-21 10:26:45,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:26:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 3483 transitions. [2020-09-21 10:26:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2020-09-21 10:26:45,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:45,908 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:45,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:26:45,909 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:45,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1185073778, now seen corresponding path program 1 times [2020-09-21 10:26:45,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:45,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318508825] [2020-09-21 10:26:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 10:26:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:46,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-09-21 10:26:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 586 proven. 140 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2020-09-21 10:26:47,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318508825] [2020-09-21 10:26:47,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:47,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:26:47,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443274629] [2020-09-21 10:26:47,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:26:47,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:47,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:26:47,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:26:47,257 INFO L87 Difference]: Start difference. First operand 3178 states and 3483 transitions. Second operand 10 states. [2020-09-21 10:26:47,807 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-09-21 10:26:48,545 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-09-21 10:26:49,227 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-09-21 10:26:49,405 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-09-21 10:26:50,301 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-09-21 10:26:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:51,375 INFO L93 Difference]: Finished difference Result 6540 states and 7198 transitions. [2020-09-21 10:26:51,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-21 10:26:51,379 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 702 [2020-09-21 10:26:51,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:51,393 INFO L225 Difference]: With dead ends: 6540 [2020-09-21 10:26:51,393 INFO L226 Difference]: Without dead ends: 3552 [2020-09-21 10:26:51,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-09-21 10:26:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-09-21 10:26:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3548. [2020-09-21 10:26:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3548 states. [2020-09-21 10:26:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 3868 transitions. [2020-09-21 10:26:51,475 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 3868 transitions. Word has length 702 [2020-09-21 10:26:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:51,476 INFO L479 AbstractCegarLoop]: Abstraction has 3548 states and 3868 transitions. [2020-09-21 10:26:51,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:26:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 3868 transitions. [2020-09-21 10:26:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-09-21 10:26:51,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:51,485 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:51,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:26:51,486 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:51,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:51,487 INFO L82 PathProgramCache]: Analyzing trace with hash 326490438, now seen corresponding path program 1 times [2020-09-21 10:26:51,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:51,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37871092] [2020-09-21 10:26:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:51,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:51,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:51,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:51,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 10:26:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 10:26:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 733 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-09-21 10:26:52,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37871092] [2020-09-21 10:26:52,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:52,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 10:26:52,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823717163] [2020-09-21 10:26:52,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:26:52,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:52,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:26:52,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:26:52,583 INFO L87 Difference]: Start difference. First operand 3548 states and 3868 transitions. Second operand 7 states. [2020-09-21 10:26:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:54,290 INFO L93 Difference]: Finished difference Result 8032 states and 8888 transitions. [2020-09-21 10:26:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:26:54,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-09-21 10:26:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:54,309 INFO L225 Difference]: With dead ends: 8032 [2020-09-21 10:26:54,310 INFO L226 Difference]: Without dead ends: 4674 [2020-09-21 10:26:54,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:26:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4674 states. [2020-09-21 10:26:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4674 to 4292. [2020-09-21 10:26:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2020-09-21 10:26:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 4748 transitions. [2020-09-21 10:26:54,406 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 4748 transitions. Word has length 728 [2020-09-21 10:26:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:54,408 INFO L479 AbstractCegarLoop]: Abstraction has 4292 states and 4748 transitions. [2020-09-21 10:26:54,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:26:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 4748 transitions. [2020-09-21 10:26:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2020-09-21 10:26:54,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:54,422 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:54,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:26:54,422 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:54,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1244120290, now seen corresponding path program 1 times [2020-09-21 10:26:54,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:54,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507131526] [2020-09-21 10:26:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:54,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:54,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:54,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 10:26:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-09-21 10:26:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:54,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-09-21 10:26:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 291 proven. 6 refuted. 0 times theorem prover too weak. 1523 trivial. 0 not checked. [2020-09-21 10:26:55,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507131526] [2020-09-21 10:26:55,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:55,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 10:26:55,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442640329] [2020-09-21 10:26:55,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:26:55,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:55,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:26:55,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:55,324 INFO L87 Difference]: Start difference. First operand 4292 states and 4748 transitions. Second operand 5 states. [2020-09-21 10:26:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:56,765 INFO L93 Difference]: Finished difference Result 4296 states and 4751 transitions. [2020-09-21 10:26:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:26:56,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 783 [2020-09-21 10:26:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:56,779 INFO L225 Difference]: With dead ends: 4296 [2020-09-21 10:26:56,779 INFO L226 Difference]: Without dead ends: 4294 [2020-09-21 10:26:56,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:26:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-09-21 10:26:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4292. [2020-09-21 10:26:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2020-09-21 10:26:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 4747 transitions. [2020-09-21 10:26:56,856 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 4747 transitions. Word has length 783 [2020-09-21 10:26:56,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:56,857 INFO L479 AbstractCegarLoop]: Abstraction has 4292 states and 4747 transitions. [2020-09-21 10:26:56,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:26:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 4747 transitions. [2020-09-21 10:26:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-09-21 10:26:56,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:56,872 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:56,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 10:26:56,872 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:56,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:56,873 INFO L82 PathProgramCache]: Analyzing trace with hash 277730204, now seen corresponding path program 1 times [2020-09-21 10:26:56,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:56,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309293469] [2020-09-21 10:26:56,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 10:26:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 10:26:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-21 10:26:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-09-21 10:26:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2344 backedges. 340 proven. 7 refuted. 0 times theorem prover too weak. 1997 trivial. 0 not checked. [2020-09-21 10:26:57,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309293469] [2020-09-21 10:26:57,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:26:57,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 10:26:57,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289144319] [2020-09-21 10:26:57,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:26:57,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:57,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:26:57,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:57,785 INFO L87 Difference]: Start difference. First operand 4292 states and 4747 transitions. Second operand 5 states. [2020-09-21 10:26:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:59,132 INFO L93 Difference]: Finished difference Result 4668 states and 5158 transitions. [2020-09-21 10:26:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:26:59,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 828 [2020-09-21 10:26:59,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:59,157 INFO L225 Difference]: With dead ends: 4668 [2020-09-21 10:26:59,158 INFO L226 Difference]: Without dead ends: 4666 [2020-09-21 10:26:59,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:26:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2020-09-21 10:26:59,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4292. [2020-09-21 10:26:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2020-09-21 10:26:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 4751 transitions. [2020-09-21 10:26:59,244 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 4751 transitions. Word has length 828 [2020-09-21 10:26:59,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:59,245 INFO L479 AbstractCegarLoop]: Abstraction has 4292 states and 4751 transitions. [2020-09-21 10:26:59,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:26:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 4751 transitions. [2020-09-21 10:26:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2020-09-21 10:26:59,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:59,261 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:59,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 10:26:59,261 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:59,262 INFO L82 PathProgramCache]: Analyzing trace with hash 117494447, now seen corresponding path program 1 times [2020-09-21 10:26:59,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:59,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687922172] [2020-09-21 10:26:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:59,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 10:26:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 10:26:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:59,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 10:26:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 10:26:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:59,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 10:26:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:59,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-21 10:26:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:59,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-09-21 10:26:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:27:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 337 proven. 28 refuted. 0 times theorem prover too weak. 2034 trivial. 0 not checked. [2020-09-21 10:27:00,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687922172] [2020-09-21 10:27:00,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:27:00,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 10:27:00,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429920606] [2020-09-21 10:27:00,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:27:00,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:27:00,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:27:00,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:27:00,174 INFO L87 Difference]: Start difference. First operand 4292 states and 4751 transitions. Second operand 7 states.