java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 21:58:08,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 21:58:08,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 21:58:08,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 21:58:08,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 21:58:08,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 21:58:08,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 21:58:08,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 21:58:08,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 21:58:08,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 21:58:08,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 21:58:08,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 21:58:08,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 21:58:08,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 21:58:08,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 21:58:08,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 21:58:08,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 21:58:08,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 21:58:09,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 21:58:09,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 21:58:09,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 21:58:09,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 21:58:09,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 21:58:09,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 21:58:09,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 21:58:09,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 21:58:09,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 21:58:09,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 21:58:09,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 21:58:09,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 21:58:09,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 21:58:09,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 21:58:09,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 21:58:09,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 21:58:09,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 21:58:09,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 21:58:09,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 21:58:09,043 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 21:58:09,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 21:58:09,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 21:58:09,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 21:58:09,046 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 21:58:09,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 21:58:09,047 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 21:58:09,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 21:58:09,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 21:58:09,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 21:58:09,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 21:58:09,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 21:58:09,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 21:58:09,049 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 21:58:09,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 21:58:09,050 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 21:58:09,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 21:58:09,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 21:58:09,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 21:58:09,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 21:58:09,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 21:58:09,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:58:09,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 21:58:09,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 21:58:09,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 21:58:09,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 21:58:09,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 21:58:09,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 21:58:09,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 21:58:09,334 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 21:58:09,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 21:58:09,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 21:58:09,360 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 21:58:09,361 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 21:58:09,361 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59.c [2019-10-14 21:58:09,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a68e07d/c97b2e5b12544b71a3e99c7a4cfc4317/FLAG284e5b351 [2019-10-14 21:58:10,061 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 21:58:10,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label59.c [2019-10-14 21:58:10,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a68e07d/c97b2e5b12544b71a3e99c7a4cfc4317/FLAG284e5b351 [2019-10-14 21:58:10,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a68e07d/c97b2e5b12544b71a3e99c7a4cfc4317 [2019-10-14 21:58:10,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 21:58:10,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 21:58:10,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 21:58:10,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 21:58:10,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 21:58:10,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:58:10" (1/1) ... [2019-10-14 21:58:10,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283ca1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:10, skipping insertion in model container [2019-10-14 21:58:10,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:58:10" (1/1) ... [2019-10-14 21:58:10,377 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 21:58:10,432 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 21:58:10,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:58:11,004 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 21:58:11,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:58:11,151 INFO L192 MainTranslator]: Completed translation [2019-10-14 21:58:11,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11 WrapperNode [2019-10-14 21:58:11,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 21:58:11,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 21:58:11,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 21:58:11,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 21:58:11,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (1/1) ... [2019-10-14 21:58:11,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (1/1) ... [2019-10-14 21:58:11,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (1/1) ... [2019-10-14 21:58:11,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (1/1) ... [2019-10-14 21:58:11,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (1/1) ... [2019-10-14 21:58:11,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (1/1) ... [2019-10-14 21:58:11,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (1/1) ... [2019-10-14 21:58:11,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 21:58:11,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 21:58:11,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 21:58:11,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 21:58:11,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:58:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 21:58:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 21:58:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 21:58:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 21:58:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 21:58:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 21:58:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 21:58:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 21:58:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 21:58:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 21:58:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 21:58:12,630 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 21:58:12,631 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 21:58:12,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:58:12 BoogieIcfgContainer [2019-10-14 21:58:12,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 21:58:12,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 21:58:12,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 21:58:12,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 21:58:12,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:58:10" (1/3) ... [2019-10-14 21:58:12,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79191352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:58:12, skipping insertion in model container [2019-10-14 21:58:12,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:11" (2/3) ... [2019-10-14 21:58:12,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79191352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:58:12, skipping insertion in model container [2019-10-14 21:58:12,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:58:12" (3/3) ... [2019-10-14 21:58:12,653 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label59.c [2019-10-14 21:58:12,665 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 21:58:12,675 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 21:58:12,687 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 21:58:12,727 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 21:58:12,727 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 21:58:12,729 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 21:58:12,729 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 21:58:12,729 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 21:58:12,730 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 21:58:12,730 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 21:58:12,730 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 21:58:12,755 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-14 21:58:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-14 21:58:12,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:12,766 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:58:12,768 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:12,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1400340266, now seen corresponding path program 1 times [2019-10-14 21:58:12,781 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:12,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197461361] [2019-10-14 21:58:12,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:12,782 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:12,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:13,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197461361] [2019-10-14 21:58:13,257 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:58:13,258 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:58:13,258 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472902503] [2019-10-14 21:58:13,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:58:13,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:13,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:58:13,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:58:13,285 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 5 states. [2019-10-14 21:58:15,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:15,332 INFO L93 Difference]: Finished difference Result 745 states and 1317 transitions. [2019-10-14 21:58:15,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 21:58:15,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-10-14 21:58:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:15,361 INFO L225 Difference]: With dead ends: 745 [2019-10-14 21:58:15,361 INFO L226 Difference]: Without dead ends: 447 [2019-10-14 21:58:15,370 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:58:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-14 21:58:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 296. [2019-10-14 21:58:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-10-14 21:58:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 448 transitions. [2019-10-14 21:58:15,458 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 448 transitions. Word has length 71 [2019-10-14 21:58:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:15,459 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 448 transitions. [2019-10-14 21:58:15,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:58:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 448 transitions. [2019-10-14 21:58:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-14 21:58:15,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:15,467 INFO L380 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, 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] [2019-10-14 21:58:15,468 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:15,468 INFO L82 PathProgramCache]: Analyzing trace with hash 41629170, now seen corresponding path program 1 times [2019-10-14 21:58:15,469 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:15,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206601189] [2019-10-14 21:58:15,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:15,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:15,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:15,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206601189] [2019-10-14 21:58:15,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422470185] [2019-10-14 21:58:15,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:15,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:58:15,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:58:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:15,986 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:58:15,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-10-14 21:58:15,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128405817] [2019-10-14 21:58:15,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:58:15,989 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:15,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:58:15,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 21:58:15,990 INFO L87 Difference]: Start difference. First operand 296 states and 448 transitions. Second operand 3 states. [2019-10-14 21:58:16,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:16,612 INFO L93 Difference]: Finished difference Result 874 states and 1343 transitions. [2019-10-14 21:58:16,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:58:16,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2019-10-14 21:58:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:16,618 INFO L225 Difference]: With dead ends: 874 [2019-10-14 21:58:16,619 INFO L226 Difference]: Without dead ends: 584 [2019-10-14 21:58:16,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 21:58:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-14 21:58:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2019-10-14 21:58:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-10-14 21:58:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 806 transitions. [2019-10-14 21:58:16,662 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 806 transitions. Word has length 141 [2019-10-14 21:58:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:16,663 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 806 transitions. [2019-10-14 21:58:16,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:58:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 806 transitions. [2019-10-14 21:58:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 21:58:16,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:16,669 INFO L380 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, 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] [2019-10-14 21:58:16,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:16,879 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash -395920931, now seen corresponding path program 1 times [2019-10-14 21:58:16,880 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:16,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51007113] [2019-10-14 21:58:16,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:16,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:16,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:17,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51007113] [2019-10-14 21:58:17,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:58:17,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 21:58:17,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845751988] [2019-10-14 21:58:17,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 21:58:17,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:17,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 21:58:17,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 21:58:17,245 INFO L87 Difference]: Start difference. First operand 584 states and 806 transitions. Second operand 9 states. [2019-10-14 21:58:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:18,979 INFO L93 Difference]: Finished difference Result 1490 states and 2155 transitions. [2019-10-14 21:58:18,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 21:58:18,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2019-10-14 21:58:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:18,986 INFO L225 Difference]: With dead ends: 1490 [2019-10-14 21:58:18,987 INFO L226 Difference]: Without dead ends: 912 [2019-10-14 21:58:18,989 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-14 21:58:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-14 21:58:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 896. [2019-10-14 21:58:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2019-10-14 21:58:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1187 transitions. [2019-10-14 21:58:19,038 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1187 transitions. Word has length 152 [2019-10-14 21:58:19,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:19,039 INFO L462 AbstractCegarLoop]: Abstraction has 896 states and 1187 transitions. [2019-10-14 21:58:19,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 21:58:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1187 transitions. [2019-10-14 21:58:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-14 21:58:19,045 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:19,045 INFO L380 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, 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] [2019-10-14 21:58:19,045 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:19,046 INFO L82 PathProgramCache]: Analyzing trace with hash 421403873, now seen corresponding path program 1 times [2019-10-14 21:58:19,046 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:19,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186720410] [2019-10-14 21:58:19,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:19,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:19,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:19,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186720410] [2019-10-14 21:58:19,445 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:58:19,445 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 21:58:19,445 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322559885] [2019-10-14 21:58:19,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 21:58:19,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:19,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 21:58:19,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 21:58:19,447 INFO L87 Difference]: Start difference. First operand 896 states and 1187 transitions. Second operand 9 states. [2019-10-14 21:58:20,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:20,900 INFO L93 Difference]: Finished difference Result 2420 states and 3439 transitions. [2019-10-14 21:58:20,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 21:58:20,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2019-10-14 21:58:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:20,911 INFO L225 Difference]: With dead ends: 2420 [2019-10-14 21:58:20,912 INFO L226 Difference]: Without dead ends: 1530 [2019-10-14 21:58:20,915 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-14 21:58:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2019-10-14 21:58:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1492. [2019-10-14 21:58:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2019-10-14 21:58:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1964 transitions. [2019-10-14 21:58:20,976 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1964 transitions. Word has length 202 [2019-10-14 21:58:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:20,976 INFO L462 AbstractCegarLoop]: Abstraction has 1492 states and 1964 transitions. [2019-10-14 21:58:20,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 21:58:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1964 transitions. [2019-10-14 21:58:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-14 21:58:20,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:20,986 INFO L380 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 21:58:20,987 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1716693714, now seen corresponding path program 1 times [2019-10-14 21:58:20,987 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:20,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680140632] [2019-10-14 21:58:20,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:20,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:20,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 9 proven. 125 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-14 21:58:21,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680140632] [2019-10-14 21:58:21,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102642966] [2019-10-14 21:58:21,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:21,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 21:58:21,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:58:21,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:21,525 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:21,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:58:21,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:58:21,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:58:34,570 WARN L191 SmtUtils]: Spent 12.94 s on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2019-10-14 21:58:34,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:58:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 131 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:34,901 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:58:34,902 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 15 [2019-10-14 21:58:34,902 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576248495] [2019-10-14 21:58:34,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 21:58:34,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:34,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 21:58:34,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-10-14 21:58:34,905 INFO L87 Difference]: Start difference. First operand 1492 states and 1964 transitions. Second operand 15 states. [2019-10-14 21:58:47,032 WARN L191 SmtUtils]: Spent 10.25 s on a formula simplification. DAG size of input: 60 DAG size of output: 55