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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:00:18,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:00:18,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:00:18,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:00:18,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:00:18,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:00:18,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:00:18,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:00:18,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:00:18,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:00:18,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:00:18,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:00:18,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:00:18,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:00:18,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:00:18,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:00:18,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:00:18,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:00:18,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:00:18,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:00:18,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:00:18,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:00:18,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:00:18,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:00:18,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:00:18,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:00:18,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:00:18,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:00:18,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:00:18,831 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:00:18,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:00:18,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:00:18,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:00:18,833 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:00:18,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:00:18,834 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:00:18,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:00:18,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:00:18,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:00:18,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:00:18,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:00:18,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:00:18,836 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:00:18,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:00:18,837 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:00:18,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:00:18,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:00:18,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:00:18,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:00:18,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:00:18,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:00:18,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:00:18,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:00:18,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:00:18,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:00:18,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:00:18,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:00:18,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:00:19,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:00:19,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:00:19,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:00:19,140 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:00:19,141 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:00:19,142 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-14 22:00:19,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387be74da/ea1e1c15431a40919cf5bae9fc613bd1/FLAGf148f0492 [2019-10-14 22:00:20,014 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:00:20,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-14 22:00:20,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387be74da/ea1e1c15431a40919cf5bae9fc613bd1/FLAGf148f0492 [2019-10-14 22:00:20,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387be74da/ea1e1c15431a40919cf5bae9fc613bd1 [2019-10-14 22:00:20,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:00:20,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:00:20,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:00:20,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:00:20,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:00:20,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:20" (1/1) ... [2019-10-14 22:00:20,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691c56bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:20, skipping insertion in model container [2019-10-14 22:00:20,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:20" (1/1) ... [2019-10-14 22:00:20,115 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:00:20,238 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:00:21,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:00:21,684 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:00:22,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:00:22,539 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:00:22,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22 WrapperNode [2019-10-14 22:00:22,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:00:22,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:00:22,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:00:22,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:00:22,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (1/1) ... [2019-10-14 22:00:22,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (1/1) ... [2019-10-14 22:00:22,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (1/1) ... [2019-10-14 22:00:22,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (1/1) ... [2019-10-14 22:00:22,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (1/1) ... [2019-10-14 22:00:22,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (1/1) ... [2019-10-14 22:00:22,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (1/1) ... [2019-10-14 22:00:22,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:00:22,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:00:22,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:00:22,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:00:22,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:00:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:00:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:00:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:00:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:00:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:00:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-14 22:00:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:00:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:00:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:00:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:00:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-14 22:00:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:00:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:00:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:00:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:00:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:00:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:00:28,068 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:00:28,069 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:00:28,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:28 BoogieIcfgContainer [2019-10-14 22:00:28,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:00:28,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:00:28,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:00:28,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:00:28,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:20" (1/3) ... [2019-10-14 22:00:28,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f3f80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:28, skipping insertion in model container [2019-10-14 22:00:28,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:22" (2/3) ... [2019-10-14 22:00:28,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f3f80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:28, skipping insertion in model container [2019-10-14 22:00:28,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:28" (3/3) ... [2019-10-14 22:00:28,098 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2019-10-14 22:00:28,111 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:00:28,122 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:00:28,134 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:00:28,180 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:00:28,180 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:00:28,180 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:00:28,180 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:00:28,180 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:00:28,180 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:00:28,181 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:00:28,181 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:00:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-14 22:00:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 22:00:28,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:00:28,242 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:00:28,244 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:00:28,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:00:28,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1204475243, now seen corresponding path program 1 times [2019-10-14 22:00:28,260 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:00:28,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662782187] [2019-10-14 22:00:28,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:28,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:28,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:00:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:00:28,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662782187] [2019-10-14 22:00:28,733 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:00:28,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:00:28,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530863308] [2019-10-14 22:00:28,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:00:28,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:00:28,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:00:28,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:00:28,757 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-10-14 22:00:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:00:40,528 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2019-10-14 22:00:40,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:00:40,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-10-14 22:00:40,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:00:40,572 INFO L225 Difference]: With dead ends: 3253 [2019-10-14 22:00:40,572 INFO L226 Difference]: Without dead ends: 2346 [2019-10-14 22:00:40,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:00:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2019-10-14 22:00:40,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2019-10-14 22:00:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2019-10-14 22:00:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2019-10-14 22:00:40,774 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 70 [2019-10-14 22:00:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:00:40,775 INFO L462 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2019-10-14 22:00:40,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:00:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2019-10-14 22:00:40,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 22:00:40,783 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:00:40,784 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:00:40,784 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:00:40,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:00:40,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2056007356, now seen corresponding path program 1 times [2019-10-14 22:00:40,785 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:00:40,785 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219657344] [2019-10-14 22:00:40,785 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:40,785 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:40,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:00:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:00:41,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219657344] [2019-10-14 22:00:41,127 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:00:41,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:00:41,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894044981] [2019-10-14 22:00:41,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:00:41,130 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:00:41,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:00:41,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:00:41,131 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 9 states. [2019-10-14 22:00:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:00:50,552 INFO L93 Difference]: Finished difference Result 7110 states and 11893 transitions. [2019-10-14 22:00:50,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:00:50,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2019-10-14 22:00:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:00:50,584 INFO L225 Difference]: With dead ends: 7110 [2019-10-14 22:00:50,585 INFO L226 Difference]: Without dead ends: 4785 [2019-10-14 22:00:50,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:00:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2019-10-14 22:00:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4725. [2019-10-14 22:00:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4725 states. [2019-10-14 22:00:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7714 transitions. [2019-10-14 22:00:50,771 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 7714 transitions. Word has length 148 [2019-10-14 22:00:50,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:00:50,775 INFO L462 AbstractCegarLoop]: Abstraction has 4725 states and 7714 transitions. [2019-10-14 22:00:50,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:00:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 7714 transitions. [2019-10-14 22:00:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-14 22:00:50,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:00:50,789 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:00:50,791 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:00:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:00:50,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1970984891, now seen corresponding path program 1 times [2019-10-14 22:00:50,792 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:00:50,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169328772] [2019-10-14 22:00:50,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:50,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:50,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:00:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:00:51,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169328772] [2019-10-14 22:00:51,182 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:00:51,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 22:00:51,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89800260] [2019-10-14 22:00:51,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:00:51,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:00:51,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:00:51,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:00:51,198 INFO L87 Difference]: Start difference. First operand 4725 states and 7714 transitions. Second operand 7 states.