/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:56:42,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:56:42,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:56:42,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:56:42,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:56:42,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:56:42,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:56:42,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:56:42,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:56:42,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:56:42,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:56:42,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:56:42,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:56:42,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:56:42,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:56:42,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:56:42,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:56:42,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:56:42,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:56:42,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:56:42,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:56:42,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:56:42,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:56:42,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:56:42,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:56:42,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:56:42,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:56:42,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:56:42,402 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 22:56:42,419 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:56:42,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:56:42,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:56:42,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:56:42,421 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:56:42,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:56:42,421 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:56:42,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:56:42,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:56:42,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:56:42,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:56:42,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:56:42,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:56:42,422 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:56:42,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:56:42,422 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:56:42,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:56:42,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:56:42,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:56:42,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:56:42,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:56:42,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:56:42,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:56:42,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:56:42,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:56:42,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:56:42,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:56:42,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:56:42,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:56:42,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:56:42,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:56:42,716 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:56:42,717 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:56:42,718 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:56:42,718 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13.c [2019-11-06 22:56:42,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c67b43a5/0dd1ea68ebba4b62861a97e6de827fb0/FLAG1c2aa1033 [2019-11-06 22:56:43,481 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:56:43,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label13.c [2019-11-06 22:56:43,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c67b43a5/0dd1ea68ebba4b62861a97e6de827fb0/FLAG1c2aa1033 [2019-11-06 22:56:43,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c67b43a5/0dd1ea68ebba4b62861a97e6de827fb0 [2019-11-06 22:56:43,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:56:43,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:56:43,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:56:43,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:56:43,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:56:43,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:43" (1/1) ... [2019-11-06 22:56:43,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e69e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:43, skipping insertion in model container [2019-11-06 22:56:43,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:43" (1/1) ... [2019-11-06 22:56:43,591 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:56:43,722 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:56:44,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:56:44,996 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:56:45,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:56:45,479 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:56:45,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45 WrapperNode [2019-11-06 22:56:45,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:56:45,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:56:45,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:56:45,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:56:45,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:56:45,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:56:45,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:56:45,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:56:45,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (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 22:56:45,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:56:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:56:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:56:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:56:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:56:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:56:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:56:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:56:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:56:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:56:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:56:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:56:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:56:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:56:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:56:49,605 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:56:49,606 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:56:49,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:49 BoogieIcfgContainer [2019-11-06 22:56:49,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:56:49,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:56:49,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:56:49,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:56:49,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:43" (1/3) ... [2019-11-06 22:56:49,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec3e6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:49, skipping insertion in model container [2019-11-06 22:56:49,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45" (2/3) ... [2019-11-06 22:56:49,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec3e6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:49, skipping insertion in model container [2019-11-06 22:56:49,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:49" (3/3) ... [2019-11-06 22:56:49,631 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label13.c [2019-11-06 22:56:49,647 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:56:49,662 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:56:49,679 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:56:49,729 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:56:49,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:56:49,730 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:56:49,730 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:56:49,730 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:56:49,730 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:56:49,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:56:49,731 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:56:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 22:56:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 22:56:49,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:56:49,789 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] [2019-11-06 22:56:49,791 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:56:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:56:49,799 INFO L82 PathProgramCache]: Analyzing trace with hash 452245930, now seen corresponding path program 1 times [2019-11-06 22:56:49,809 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:56:49,810 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531083574] [2019-11-06 22:56:49,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:56:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:56:50,191 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 22:56:50,192 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531083574] [2019-11-06 22:56:50,193 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:56:50,193 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:56:50,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135343916] [2019-11-06 22:56:50,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:56:50,202 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:56:50,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:56:50,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:56:50,219 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-11-06 22:56:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:56:57,436 INFO L93 Difference]: Finished difference Result 2970 states and 5743 transitions. [2019-11-06 22:56:57,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:56:57,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 22:56:57,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:56:57,487 INFO L225 Difference]: With dead ends: 2970 [2019-11-06 22:56:57,487 INFO L226 Difference]: Without dead ends: 2114 [2019-11-06 22:56:57,501 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:56:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-11-06 22:56:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-11-06 22:56:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-11-06 22:56:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3320 transitions. [2019-11-06 22:56:57,692 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3320 transitions. Word has length 51 [2019-11-06 22:56:57,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:56:57,694 INFO L462 AbstractCegarLoop]: Abstraction has 2114 states and 3320 transitions. [2019-11-06 22:56:57,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:56:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3320 transitions. [2019-11-06 22:56:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 22:56:57,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:56:57,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:57,709 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:56:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:56:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1249400303, now seen corresponding path program 1 times [2019-11-06 22:56:57,709 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:56:57,710 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93997928] [2019-11-06 22:56:57,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:56:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:56:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:56:57,910 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93997928] [2019-11-06 22:56:57,910 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:56:57,911 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:56:57,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157322043] [2019-11-06 22:56:57,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:56:57,920 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:56:57,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:56:57,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:56:57,920 INFO L87 Difference]: Start difference. First operand 2114 states and 3320 transitions. Second operand 5 states. [2019-11-06 22:57:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:03,180 INFO L93 Difference]: Finished difference Result 6436 states and 10244 transitions. [2019-11-06 22:57:03,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:57:03,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-11-06 22:57:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:03,215 INFO L225 Difference]: With dead ends: 6436 [2019-11-06 22:57:03,215 INFO L226 Difference]: Without dead ends: 4328 [2019-11-06 22:57:03,221 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:57:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-11-06 22:57:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-11-06 22:57:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-11-06 22:57:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6416 transitions. [2019-11-06 22:57:03,362 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6416 transitions. Word has length 120 [2019-11-06 22:57:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:03,364 INFO L462 AbstractCegarLoop]: Abstraction has 4296 states and 6416 transitions. [2019-11-06 22:57:03,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:57:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6416 transitions. [2019-11-06 22:57:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:57:03,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:03,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:03,374 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:03,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1277555170, now seen corresponding path program 1 times [2019-11-06 22:57:03,375 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:03,376 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881710133] [2019-11-06 22:57:03,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:03,619 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881710133] [2019-11-06 22:57:03,619 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:03,619 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:57:03,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969794364] [2019-11-06 22:57:03,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:57:03,621 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:03,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:57:03,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:57:03,621 INFO L87 Difference]: Start difference. First operand 4296 states and 6416 transitions. Second operand 6 states. [2019-11-06 22:57:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:08,673 INFO L93 Difference]: Finished difference Result 10829 states and 16211 transitions. [2019-11-06 22:57:08,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:57:08,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2019-11-06 22:57:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:08,706 INFO L225 Difference]: With dead ends: 10829 [2019-11-06 22:57:08,707 INFO L226 Difference]: Without dead ends: 6539 [2019-11-06 22:57:08,718 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:57:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2019-11-06 22:57:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6505. [2019-11-06 22:57:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-11-06 22:57:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 8361 transitions. [2019-11-06 22:57:08,875 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 8361 transitions. Word has length 147 [2019-11-06 22:57:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:08,876 INFO L462 AbstractCegarLoop]: Abstraction has 6505 states and 8361 transitions. [2019-11-06 22:57:08,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:57:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 8361 transitions. [2019-11-06 22:57:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-06 22:57:08,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:08,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:08,879 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:08,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:08,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1631165718, now seen corresponding path program 1 times [2019-11-06 22:57:08,880 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:08,880 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975757583] [2019-11-06 22:57:08,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:09,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975757583] [2019-11-06 22:57:09,010 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:09,011 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:57:09,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386460405] [2019-11-06 22:57:09,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:57:09,012 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:57:09,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:57:09,013 INFO L87 Difference]: Start difference. First operand 6505 states and 8361 transitions. Second operand 4 states. [2019-11-06 22:57:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:14,301 INFO L93 Difference]: Finished difference Result 13004 states and 16722 transitions. [2019-11-06 22:57:14,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:57:14,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2019-11-06 22:57:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:14,337 INFO L225 Difference]: With dead ends: 13004 [2019-11-06 22:57:14,337 INFO L226 Difference]: Without dead ends: 6505 [2019-11-06 22:57:14,349 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:57:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2019-11-06 22:57:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 6505. [2019-11-06 22:57:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-11-06 22:57:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 7877 transitions. [2019-11-06 22:57:14,481 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 7877 transitions. Word has length 157 [2019-11-06 22:57:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:14,481 INFO L462 AbstractCegarLoop]: Abstraction has 6505 states and 7877 transitions. [2019-11-06 22:57:14,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:57:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 7877 transitions. [2019-11-06 22:57:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-11-06 22:57:14,485 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:14,485 INFO L410 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, 2, 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] [2019-11-06 22:57:14,486 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:14,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:14,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1661605379, now seen corresponding path program 1 times [2019-11-06 22:57:14,486 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:14,487 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985245787] [2019-11-06 22:57:14,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-11-06 22:57:14,644 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985245787] [2019-11-06 22:57:14,645 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:14,645 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:57:14,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332558204] [2019-11-06 22:57:14,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:57:14,647 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:14,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:57:14,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:57:14,648 INFO L87 Difference]: Start difference. First operand 6505 states and 7877 transitions. Second operand 4 states.