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/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:15:29,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:15:29,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:15:29,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:15:29,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:15:29,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:15:29,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:15:29,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:15:29,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:15:29,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:15:29,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:15:29,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:15:29,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:15:29,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:15:29,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:15:29,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:15:29,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:15:29,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:15:29,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:15:29,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:15:29,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:15:29,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:15:29,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:15:29,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:15:29,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:15:29,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:15:29,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:15:29,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:15:29,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:15:29,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:15:29,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:15:29,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:15:29,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:15:29,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:15:29,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:15:29,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:15:29,611 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 [2019-10-13 19:15:29,641 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:15:29,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:15:29,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:15:29,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:15:29,643 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:15:29,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:15:29,644 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:15:29,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:15:29,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:15:29,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:15:29,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:15:29,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:15:29,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:15:29,645 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:15:29,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:15:29,645 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:15:29,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:15:29,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:15:29,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:15:29,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:15:29,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:15:29,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:15:29,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:15:29,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:15:29,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:15:29,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:15:29,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:15:29,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:15:29,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:15:29,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:15:29,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:15:29,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:15:29,920 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:15:29,920 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:15:29,921 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2019-10-13 19:15:29,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e5b4ddb/fb14c10d59154aa697327459ecbc0c31/FLAG08901e6b6 [2019-10-13 19:15:30,473 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:15:30,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2019-10-13 19:15:30,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e5b4ddb/fb14c10d59154aa697327459ecbc0c31/FLAG08901e6b6 [2019-10-13 19:15:30,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e5b4ddb/fb14c10d59154aa697327459ecbc0c31 [2019-10-13 19:15:30,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:15:30,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:15:30,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:15:30,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:15:30,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:15:30,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:30" (1/1) ... [2019-10-13 19:15:30,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5ad9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30, skipping insertion in model container [2019-10-13 19:15:30,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:30" (1/1) ... [2019-10-13 19:15:30,850 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:15:30,880 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:15:31,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:15:31,079 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:15:31,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:15:31,220 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:15:31,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31 WrapperNode [2019-10-13 19:15:31,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:15:31,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:15:31,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:15:31,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:15:31,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (1/1) ... [2019-10-13 19:15:31,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (1/1) ... [2019-10-13 19:15:31,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (1/1) ... [2019-10-13 19:15:31,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (1/1) ... [2019-10-13 19:15:31,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (1/1) ... [2019-10-13 19:15:31,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (1/1) ... [2019-10-13 19:15:31,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (1/1) ... [2019-10-13 19:15:31,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:15:31,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:15:31,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:15:31,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:15:31,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (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 [2019-10-13 19:15:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:15:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:15:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:15:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:15:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:15:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:15:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 19:15:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:15:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:15:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:15:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:15:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:15:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:15:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:15:31,682 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:15:31,682 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:15:31,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:31 BoogieIcfgContainer [2019-10-13 19:15:31,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:15:31,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:15:31,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:15:31,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:15:31,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:15:30" (1/3) ... [2019-10-13 19:15:31,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61491705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:31, skipping insertion in model container [2019-10-13 19:15:31,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:31" (2/3) ... [2019-10-13 19:15:31,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61491705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:31, skipping insertion in model container [2019-10-13 19:15:31,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:31" (3/3) ... [2019-10-13 19:15:31,691 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2019-10-13 19:15:31,700 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:15:31,707 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-13 19:15:31,718 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-13 19:15:31,739 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:15:31,740 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:15:31,740 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:15:31,740 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:15:31,740 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:15:31,740 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:15:31,740 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:15:31,740 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:15:31,754 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-13 19:15:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:15:31,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:31,760 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:31,761 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:31,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1494900034, now seen corresponding path program 1 times [2019-10-13 19:15:31,774 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:31,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022485750] [2019-10-13 19:15:31,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:31,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:31,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:32,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022485750] [2019-10-13 19:15:32,028 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:15:32,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:15:32,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523560945] [2019-10-13 19:15:32,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:15:32,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:32,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:15:32,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:15:32,044 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2019-10-13 19:15:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:32,191 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2019-10-13 19:15:32,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:15:32,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-13 19:15:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:32,203 INFO L225 Difference]: With dead ends: 56 [2019-10-13 19:15:32,204 INFO L226 Difference]: Without dead ends: 34 [2019-10-13 19:15:32,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:15:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-13 19:15:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-10-13 19:15:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-13 19:15:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-10-13 19:15:32,250 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 13 [2019-10-13 19:15:32,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:32,251 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-10-13 19:15:32,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:15:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-10-13 19:15:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:15:32,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:32,253 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:32,253 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:32,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:32,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1256853917, now seen corresponding path program 1 times [2019-10-13 19:15:32,255 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:32,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542568745] [2019-10-13 19:15:32,256 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:32,256 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:32,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:32,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542568745] [2019-10-13 19:15:32,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:15:32,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:15:32,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261464372] [2019-10-13 19:15:32,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:15:32,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:32,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:15:32,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:15:32,361 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2019-10-13 19:15:32,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:32,473 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-10-13 19:15:32,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:15:32,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-13 19:15:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:32,475 INFO L225 Difference]: With dead ends: 53 [2019-10-13 19:15:32,476 INFO L226 Difference]: Without dead ends: 51 [2019-10-13 19:15:32,477 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:15:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-13 19:15:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2019-10-13 19:15:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-13 19:15:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-13 19:15:32,485 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 14 [2019-10-13 19:15:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:32,486 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-13 19:15:32,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:15:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-13 19:15:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:15:32,487 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:32,487 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:32,488 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1192177656, now seen corresponding path program 1 times [2019-10-13 19:15:32,489 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:32,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358922686] [2019-10-13 19:15:32,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:32,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:32,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:32,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358922686] [2019-10-13 19:15:32,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:15:32,572 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:15:32,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615996875] [2019-10-13 19:15:32,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:15:32,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:32,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:15:32,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:15:32,574 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 4 states. [2019-10-13 19:15:32,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:32,668 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2019-10-13 19:15:32,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:15:32,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-13 19:15:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:32,670 INFO L225 Difference]: With dead ends: 62 [2019-10-13 19:15:32,671 INFO L226 Difference]: Without dead ends: 41 [2019-10-13 19:15:32,671 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:15:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-13 19:15:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2019-10-13 19:15:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-13 19:15:32,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-10-13 19:15:32,678 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2019-10-13 19:15:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:32,679 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-10-13 19:15:32,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:15:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-10-13 19:15:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 19:15:32,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:32,680 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:32,680 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:32,681 INFO L82 PathProgramCache]: Analyzing trace with hash -249616619, now seen corresponding path program 1 times [2019-10-13 19:15:32,681 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:32,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469741094] [2019-10-13 19:15:32,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:32,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:32,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:32,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469741094] [2019-10-13 19:15:32,732 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:15:32,732 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:15:32,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843077086] [2019-10-13 19:15:32,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:15:32,733 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:32,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:15:32,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:15:32,734 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2019-10-13 19:15:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:32,822 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2019-10-13 19:15:32,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:15:32,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-13 19:15:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:32,824 INFO L225 Difference]: With dead ends: 56 [2019-10-13 19:15:32,824 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 19:15:32,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:15:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 19:15:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2019-10-13 19:15:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 19:15:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-13 19:15:32,833 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2019-10-13 19:15:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:32,834 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-13 19:15:32,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:15:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-13 19:15:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:15:32,835 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:32,835 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] [2019-10-13 19:15:32,835 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:32,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1739668830, now seen corresponding path program 1 times [2019-10-13 19:15:32,836 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:32,836 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930495973] [2019-10-13 19:15:32,837 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:32,838 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:32,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:33,532 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 40 [2019-10-13 19:15:33,782 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 44 [2019-10-13 19:15:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:33,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930495973] [2019-10-13 19:15:33,843 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:15:33,843 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:15:33,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693032909] [2019-10-13 19:15:33,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:15:33,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:33,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:15:33,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:15:33,846 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2019-10-13 19:15:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:34,264 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-10-13 19:15:34,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:15:34,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-10-13 19:15:34,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:34,266 INFO L225 Difference]: With dead ends: 47 [2019-10-13 19:15:34,266 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 19:15:34,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:15:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 19:15:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-10-13 19:15:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-13 19:15:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-10-13 19:15:34,276 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2019-10-13 19:15:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:34,277 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-10-13 19:15:34,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:15:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-10-13 19:15:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 19:15:34,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:34,278 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] [2019-10-13 19:15:34,279 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:34,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:34,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1253973443, now seen corresponding path program 1 times [2019-10-13 19:15:34,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:34,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389924087] [2019-10-13 19:15:34,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:34,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:34,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:34,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389924087] [2019-10-13 19:15:34,381 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:15:34,381 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:15:34,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686765242] [2019-10-13 19:15:34,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:15:34,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:34,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:15:34,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:15:34,384 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2019-10-13 19:15:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:34,502 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2019-10-13 19:15:34,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:15:34,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-10-13 19:15:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:34,503 INFO L225 Difference]: With dead ends: 44 [2019-10-13 19:15:34,504 INFO L226 Difference]: Without dead ends: 42 [2019-10-13 19:15:34,507 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:15:34,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-13 19:15:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2019-10-13 19:15:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 19:15:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-10-13 19:15:34,518 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2019-10-13 19:15:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:34,518 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-10-13 19:15:34,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:15:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-10-13 19:15:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 19:15:34,519 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:34,520 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:34,520 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:34,521 INFO L82 PathProgramCache]: Analyzing trace with hash 899200671, now seen corresponding path program 1 times [2019-10-13 19:15:34,521 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:34,521 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126008812] [2019-10-13 19:15:34,521 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:34,522 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:34,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:36,998 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div (+ c_main_~main__index1~0 (- 1)) 4294967296))) (and (<= c_main_~main__index1~0 (+ (* 4294967296 .cse0) 100000)) (let ((.cse2 (div c_main_~main__index1~0 4294967296)) (.cse1 (div c_main_~main__index2~0 4294967296))) (or (<= (+ c_main_~main__index2~0 4294867298) (* 4294967296 .cse1)) (<= (+ (* 4294967296 .cse2) 4294967297) c_main_~main__index1~0) (<= c_main_~main__index1~0 (+ (* 4294967296 (div (+ (* .cse2 4294967296) (* c_main_~main__index1~0 4294967294) (* .cse0 4294967296) (* c_main_~main__index2~0 (- 4294967295)) (* .cse1 (- 4294967296)) 429483844598116) 18446744073709551616)) c_main_~main__index2~0 1)))))) is different from false [2019-10-13 19:15:39,055 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div (+ c_main_~main__index1~0 (- 1)) 4294967296))) (and (<= c_main_~main__index1~0 (+ (* 4294967296 .cse0) 100000)) (<= c_main_~main__index1~0 (+ (* 4294967296 (div (+ (* (div c_main_~main__index1~0 4294967296) 4294967296) (* c_main_~main__index1~0 4294967294) (* .cse0 4294967296) (* c_main_~main__index2~0 (- 4294967295)) (* (div c_main_~main__index2~0 4294967296) (- 4294967296)) 429483844598116) 18446744073709551616)) c_main_~main__index2~0 1)))) is different from false [2019-10-13 19:15:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-10-13 19:15:41,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126008812] [2019-10-13 19:15:41,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234150467] [2019-10-13 19:15:41,520 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 [2019-10-13 19:15:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:41,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 19:15:41,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:15:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:43,981 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:15:43,982 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-10-13 19:15:43,982 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533928642] [2019-10-13 19:15:43,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:15:43,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:15:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=65, Unknown=4, NotChecked=34, Total=132 [2019-10-13 19:15:43,984 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 12 states. [2019-10-13 19:16:16,791 WARN L191 SmtUtils]: Spent 26.34 s on a formula simplification. DAG size of input: 49 DAG size of output: 38