/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:10:43,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:10:43,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:10:43,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:10:43,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:10:43,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:10:43,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:10:43,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:10:43,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:10:43,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:10:43,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:10:43,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:10:43,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:10:43,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:10:43,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:10:43,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:10:43,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:10:43,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:10:43,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:10:43,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:10:43,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:10:43,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:10:43,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:10:43,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:10:43,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:10:43,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:10:43,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:10:43,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:10:43,420 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 [2019-11-06 19:10:43,435 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:10:43,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:10:43,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:10:43,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:10:43,437 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:10:43,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:10:43,437 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:10:43,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:10:43,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:10:43,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:10:43,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:10:43,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:10:43,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:10:43,438 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:10:43,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:10:43,439 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:10:43,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:10:43,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:10:43,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:10:43,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:10:43,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:10:43,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:10:43,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:10:43,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:10:43,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:10:43,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:10:43,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:10:43,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:10:43,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:10:43,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:10:43,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:10:43,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:10:43,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:10:43,757 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:10:43,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2019-11-06 19:10:43,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03efec4f/322696c151f5479a9b7bb0d5a12ce8df/FLAGe50446da8 [2019-11-06 19:10:44,540 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:10:44,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2019-11-06 19:10:44,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03efec4f/322696c151f5479a9b7bb0d5a12ce8df/FLAGe50446da8 [2019-11-06 19:10:44,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03efec4f/322696c151f5479a9b7bb0d5a12ce8df [2019-11-06 19:10:44,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:10:44,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:10:44,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:10:44,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:10:44,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:10:44,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:10:44" (1/1) ... [2019-11-06 19:10:44,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbb8379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:44, skipping insertion in model container [2019-11-06 19:10:44,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:10:44" (1/1) ... [2019-11-06 19:10:44,673 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:10:44,806 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:10:46,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:10:46,247 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:10:47,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:10:47,045 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:10:47,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47 WrapperNode [2019-11-06 19:10:47,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:10:47,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:10:47,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:10:47,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:10:47,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (1/1) ... [2019-11-06 19:10:47,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (1/1) ... [2019-11-06 19:10:47,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (1/1) ... [2019-11-06 19:10:47,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (1/1) ... [2019-11-06 19:10:47,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (1/1) ... [2019-11-06 19:10:47,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (1/1) ... [2019-11-06 19:10:47,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (1/1) ... [2019-11-06 19:10:47,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:10:47,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:10:47,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:10:47,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:10:47,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (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 [2019-11-06 19:10:47,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:10:47,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:10:47,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:10:47,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:10:47,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:10:47,408 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:10:47,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:10:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:10:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:10:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:10:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:10:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:10:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:10:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:10:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:10:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:10:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:10:52,729 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:10:52,730 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:10:52,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:10:52 BoogieIcfgContainer [2019-11-06 19:10:52,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:10:52,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:10:52,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:10:52,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:10:52,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:10:44" (1/3) ... [2019-11-06 19:10:52,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57aa9144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:10:52, skipping insertion in model container [2019-11-06 19:10:52,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:10:47" (2/3) ... [2019-11-06 19:10:52,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57aa9144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:10:52, skipping insertion in model container [2019-11-06 19:10:52,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:10:52" (3/3) ... [2019-11-06 19:10:52,749 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2019-11-06 19:10:52,761 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:10:52,772 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:10:52,784 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:10:52,834 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:10:52,834 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:10:52,834 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:10:52,834 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:10:52,834 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:10:52,834 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:10:52,835 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:10:52,835 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:10:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 19:10:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 19:10:52,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:10:52,881 INFO L410 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] [2019-11-06 19:10:52,883 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:10:52,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:10:52,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1315979506, now seen corresponding path program 1 times [2019-11-06 19:10:52,898 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:10:52,899 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735713079] [2019-11-06 19:10:52,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:10:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:10:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:10:53,347 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735713079] [2019-11-06 19:10:53,348 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:10:53,348 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:10:53,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850791163] [2019-11-06 19:10:53,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:10:53,355 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:10:53,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:10:53,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:10:53,372 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-11-06 19:11:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:11:02,025 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2019-11-06 19:11:02,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 19:11:02,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-11-06 19:11:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:11:02,074 INFO L225 Difference]: With dead ends: 2471 [2019-11-06 19:11:02,075 INFO L226 Difference]: Without dead ends: 1568 [2019-11-06 19:11:02,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:11:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2019-11-06 19:11:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2019-11-06 19:11:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2019-11-06 19:11:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2019-11-06 19:11:02,269 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 71 [2019-11-06 19:11:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:11:02,270 INFO L462 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2019-11-06 19:11:02,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:11:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2019-11-06 19:11:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-06 19:11:02,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:11:02,287 INFO L410 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] [2019-11-06 19:11:02,287 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:11:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:11:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1550888775, now seen corresponding path program 1 times [2019-11-06 19:11:02,288 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:11:02,288 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51727452] [2019-11-06 19:11:02,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:11:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:11:02,734 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51727452] [2019-11-06 19:11:02,735 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:11:02,735 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:11:02,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295115589] [2019-11-06 19:11:02,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:11:02,738 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:11:02,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:11:02,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:11:02,738 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 8 states. [2019-11-06 19:11:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:11:14,803 INFO L93 Difference]: Finished difference Result 4751 states and 8585 transitions. [2019-11-06 19:11:14,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:11:14,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 144 [2019-11-06 19:11:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:11:14,822 INFO L225 Difference]: With dead ends: 4751 [2019-11-06 19:11:14,823 INFO L226 Difference]: Without dead ends: 3204 [2019-11-06 19:11:14,828 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:11:14,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2019-11-06 19:11:14,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3149. [2019-11-06 19:11:14,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3149 states. [2019-11-06 19:11:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4657 transitions. [2019-11-06 19:11:14,928 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 4657 transitions. Word has length 144 [2019-11-06 19:11:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:11:14,929 INFO L462 AbstractCegarLoop]: Abstraction has 3149 states and 4657 transitions. [2019-11-06 19:11:14,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:11:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 4657 transitions. [2019-11-06 19:11:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 19:11:14,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:11:14,938 INFO L410 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] [2019-11-06 19:11:14,939 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:11:14,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:11:14,940 INFO L82 PathProgramCache]: Analyzing trace with hash 318484651, now seen corresponding path program 1 times [2019-11-06 19:11:14,940 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:11:14,941 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326794216] [2019-11-06 19:11:14,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:11:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:11:15,266 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326794216] [2019-11-06 19:11:15,267 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498357502] [2019-11-06 19:11:15,267 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 [2019-11-06 19:11:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:15,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-06 19:11:15,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:11:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 19:11:15,527 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:11:15,527 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-11-06 19:11:15,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890477567] [2019-11-06 19:11:15,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:11:15,533 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:11:15,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:11:15,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:11:15,543 INFO L87 Difference]: Start difference. First operand 3149 states and 4657 transitions. Second operand 8 states.