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/Problem16_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:06:13,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:06:13,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:06:13,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:06:13,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:06:13,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:06:13,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:06:13,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:06:13,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:06:13,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:06:13,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:06:13,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:06:13,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:06:13,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:06:13,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:06:13,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:06:13,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:06:13,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:06:13,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:06:13,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:06:13,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:06:13,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:06:13,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:06:13,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:06:13,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:06:13,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:06:13,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:06:13,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:06:13,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:06:13,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:06:13,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:06:13,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:06:13,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:06:13,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:06:13,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:06:13,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:06:13,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:06:13,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:06:13,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:06:13,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:06:13,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:06:13,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:06:13,404 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:06:13,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:06:13,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:06:13,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:06:13,406 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:06:13,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:06:13,406 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:06:13,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:06:13,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:06:13,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:06:13,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:06:13,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:06:13,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:06:13,408 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:06:13,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:06:13,408 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:06:13,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:06:13,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:06:13,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:06:13,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:06:13,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:06:13,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:06:13,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:06:13,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:06:13,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:06:13,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:06:13,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:06:13,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:06:13,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:06:13,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:06:13,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:06:13,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:06:13,744 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:06:13,744 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:06:13,745 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label59.c [2019-10-13 18:06:13,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee3c7a2b/c20fe342d08e4b7994b57b888faa9ee4/FLAG725bc297d [2019-10-13 18:06:14,499 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:06:14,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label59.c [2019-10-13 18:06:14,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee3c7a2b/c20fe342d08e4b7994b57b888faa9ee4/FLAG725bc297d [2019-10-13 18:06:14,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee3c7a2b/c20fe342d08e4b7994b57b888faa9ee4 [2019-10-13 18:06:14,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:06:14,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:06:14,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:14,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:06:14,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:06:14,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:14" (1/1) ... [2019-10-13 18:06:14,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b073ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:14, skipping insertion in model container [2019-10-13 18:06:14,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:14" (1/1) ... [2019-10-13 18:06:14,747 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:06:14,823 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:06:15,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:15,766 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:06:16,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:16,291 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:06:16,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16 WrapperNode [2019-10-13 18:06:16,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:16,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:06:16,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:06:16,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:06:16,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:06:16,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:06:16,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:06:16,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:06:16,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:06:16,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:06:16,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:06:16,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:06:16,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:06:16,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:06:16,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:06:16,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:06:16,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:06:16,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:06:16,612 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:06:16,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:06:16,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:06:16,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:06:19,041 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:06:19,042 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:06:19,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:19 BoogieIcfgContainer [2019-10-13 18:06:19,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:06:19,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:06:19,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:06:19,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:06:19,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:06:14" (1/3) ... [2019-10-13 18:06:19,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcd4d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:19, skipping insertion in model container [2019-10-13 18:06:19,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16" (2/3) ... [2019-10-13 18:06:19,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcd4d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:19, skipping insertion in model container [2019-10-13 18:06:19,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:19" (3/3) ... [2019-10-13 18:06:19,055 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label59.c [2019-10-13 18:06:19,067 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:06:19,081 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:06:19,092 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:06:19,141 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:06:19,141 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:06:19,141 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:06:19,141 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:06:19,141 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:06:19,142 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:06:19,142 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:06:19,142 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:06:19,167 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-13 18:06:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-13 18:06:19,176 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:19,177 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] [2019-10-13 18:06:19,179 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:19,185 INFO L82 PathProgramCache]: Analyzing trace with hash 441103245, now seen corresponding path program 1 times [2019-10-13 18:06:19,193 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:19,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089990949] [2019-10-13 18:06:19,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:19,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:19,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:19,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089990949] [2019-10-13 18:06:19,571 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:19,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:06:19,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145339449] [2019-10-13 18:06:19,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:06:19,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:19,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:06:19,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:06:19,595 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-13 18:06:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:24,525 INFO L93 Difference]: Finished difference Result 1530 states and 2865 transitions. [2019-10-13 18:06:24,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:06:24,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2019-10-13 18:06:24,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:24,554 INFO L225 Difference]: With dead ends: 1530 [2019-10-13 18:06:24,554 INFO L226 Difference]: Without dead ends: 1038 [2019-10-13 18:06:24,565 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:06:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-13 18:06:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-13 18:06:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-13 18:06:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1787 transitions. [2019-10-13 18:06:24,697 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1787 transitions. Word has length 50 [2019-10-13 18:06:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:24,697 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1787 transitions. [2019-10-13 18:06:24,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:06:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1787 transitions. [2019-10-13 18:06:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 18:06:24,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:24,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:24,704 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash -233546559, now seen corresponding path program 1 times [2019-10-13 18:06:24,705 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:24,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589860097] [2019-10-13 18:06:24,705 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:24,706 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:24,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:25,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589860097] [2019-10-13 18:06:25,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:25,062 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:06:25,062 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138568795] [2019-10-13 18:06:25,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:06:25,065 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:25,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:06:25,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:06:25,066 INFO L87 Difference]: Start difference. First operand 1031 states and 1787 transitions. Second operand 8 states. [2019-10-13 18:06:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:29,323 INFO L93 Difference]: Finished difference Result 3125 states and 5529 transitions. [2019-10-13 18:06:29,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:06:29,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2019-10-13 18:06:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:29,338 INFO L225 Difference]: With dead ends: 3125 [2019-10-13 18:06:29,339 INFO L226 Difference]: Without dead ends: 2100 [2019-10-13 18:06:29,343 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:06:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2019-10-13 18:06:29,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1384. [2019-10-13 18:06:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2019-10-13 18:06:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2288 transitions. [2019-10-13 18:06:29,450 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2288 transitions. Word has length 119 [2019-10-13 18:06:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:29,453 INFO L462 AbstractCegarLoop]: Abstraction has 1384 states and 2288 transitions. [2019-10-13 18:06:29,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:06:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2288 transitions. [2019-10-13 18:06:29,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 18:06:29,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:29,467 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:29,467 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:29,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:29,469 INFO L82 PathProgramCache]: Analyzing trace with hash -702025816, now seen corresponding path program 1 times [2019-10-13 18:06:29,469 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:29,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7511656] [2019-10-13 18:06:29,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:29,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:29,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:29,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7511656] [2019-10-13 18:06:29,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:29,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:06:29,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523614172] [2019-10-13 18:06:29,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:06:29,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:29,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:06:29,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:06:29,795 INFO L87 Difference]: Start difference. First operand 1384 states and 2288 transitions. Second operand 9 states. [2019-10-13 18:06:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:35,207 INFO L93 Difference]: Finished difference Result 4170 states and 6860 transitions. [2019-10-13 18:06:35,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:06:35,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2019-10-13 18:06:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:35,226 INFO L225 Difference]: With dead ends: 4170 [2019-10-13 18:06:35,226 INFO L226 Difference]: Without dead ends: 2792 [2019-10-13 18:06:35,231 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:06:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2019-10-13 18:06:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2773. [2019-10-13 18:06:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2773 states. [2019-10-13 18:06:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 3898 transitions. [2019-10-13 18:06:35,336 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 3898 transitions. Word has length 122 [2019-10-13 18:06:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:35,340 INFO L462 AbstractCegarLoop]: Abstraction has 2773 states and 3898 transitions. [2019-10-13 18:06:35,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:06:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 3898 transitions. [2019-10-13 18:06:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 18:06:35,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:35,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:35,348 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash 721853152, now seen corresponding path program 1 times [2019-10-13 18:06:35,349 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:35,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258172775] [2019-10-13 18:06:35,350 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:35,350 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:35,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:35,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258172775] [2019-10-13 18:06:35,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:35,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:06:35,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017618962] [2019-10-13 18:06:35,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:06:35,609 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:35,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:06:35,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:06:35,610 INFO L87 Difference]: Start difference. First operand 2773 states and 3898 transitions. Second operand 9 states. [2019-10-13 18:06:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:42,505 INFO L93 Difference]: Finished difference Result 9052 states and 13215 transitions. [2019-10-13 18:06:42,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 18:06:42,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 126 [2019-10-13 18:06:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:42,544 INFO L225 Difference]: With dead ends: 9052 [2019-10-13 18:06:42,545 INFO L226 Difference]: Without dead ends: 6285 [2019-10-13 18:06:42,554 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-10-13 18:06:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2019-10-13 18:06:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 6259. [2019-10-13 18:06:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6259 states. [2019-10-13 18:06:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 8353 transitions. [2019-10-13 18:06:42,806 INFO L78 Accepts]: Start accepts. Automaton has 6259 states and 8353 transitions. Word has length 126 [2019-10-13 18:06:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:42,808 INFO L462 AbstractCegarLoop]: Abstraction has 6259 states and 8353 transitions. [2019-10-13 18:06:42,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:06:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6259 states and 8353 transitions. [2019-10-13 18:06:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 18:06:42,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:42,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:42,812 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:42,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:42,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1718542795, now seen corresponding path program 1 times [2019-10-13 18:06:42,814 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:42,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946320793] [2019-10-13 18:06:42,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:42,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:42,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:43,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946320793] [2019-10-13 18:06:43,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810443808] [2019-10-13 18:06:43,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:43,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:06:43,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:06:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:43,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:06:43,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-13 18:06:43,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568836306] [2019-10-13 18:06:43,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:06:43,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:06:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 18:06:43,321 INFO L87 Difference]: Start difference. First operand 6259 states and 8353 transitions. Second operand 3 states. [2019-10-13 18:06:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:45,128 INFO L93 Difference]: Finished difference Result 14553 states and 19739 transitions. [2019-10-13 18:06:45,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:06:45,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2019-10-13 18:06:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:45,174 INFO L225 Difference]: With dead ends: 14553 [2019-10-13 18:06:45,174 INFO L226 Difference]: Without dead ends: 8300 [2019-10-13 18:06:45,193 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 18:06:45,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8300 states. [2019-10-13 18:06:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8300 to 8300. [2019-10-13 18:06:45,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8300 states. [2019-10-13 18:06:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8300 states to 8300 states and 10769 transitions. [2019-10-13 18:06:45,418 INFO L78 Accepts]: Start accepts. Automaton has 8300 states and 10769 transitions. Word has length 141 [2019-10-13 18:06:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:45,419 INFO L462 AbstractCegarLoop]: Abstraction has 8300 states and 10769 transitions. [2019-10-13 18:06:45,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:06:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8300 states and 10769 transitions. [2019-10-13 18:06:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2019-10-13 18:06:45,428 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:45,429 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:45,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:45,639 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash -704792073, now seen corresponding path program 1 times [2019-10-13 18:06:45,640 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:45,640 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388634130] [2019-10-13 18:06:45,641 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:45,641 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:45,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 84 proven. 8 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-13 18:06:46,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388634130] [2019-10-13 18:06:46,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284328964] [2019-10-13 18:06:46,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:46,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:06:46,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:06:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-13 18:06:46,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:06:46,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-10-13 18:06:46,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969530199] [2019-10-13 18:06:46,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:06:46,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:46,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:06:46,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:06:46,327 INFO L87 Difference]: Start difference. First operand 8300 states and 10769 transitions. Second operand 3 states. [2019-10-13 18:06:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:48,333 INFO L93 Difference]: Finished difference Result 19316 states and 25228 transitions. [2019-10-13 18:06:48,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:06:48,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2019-10-13 18:06:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:48,409 INFO L225 Difference]: With dead ends: 19316 [2019-10-13 18:06:48,409 INFO L226 Difference]: Without dead ends: 11022 [2019-10-13 18:06:48,431 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:06:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2019-10-13 18:06:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 10007. [2019-10-13 18:06:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10007 states. [2019-10-13 18:06:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 12738 transitions. [2019-10-13 18:06:48,654 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 12738 transitions. Word has length 312 [2019-10-13 18:06:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:48,655 INFO L462 AbstractCegarLoop]: Abstraction has 10007 states and 12738 transitions. [2019-10-13 18:06:48,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:06:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 12738 transitions. [2019-10-13 18:06:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2019-10-13 18:06:48,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:48,664 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-10-13 18:06:48,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:48,870 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:48,870 INFO L82 PathProgramCache]: Analyzing trace with hash 11275176, now seen corresponding path program 1 times [2019-10-13 18:06:48,871 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:48,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712201628] [2019-10-13 18:06:48,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:48,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:48,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 230 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-13 18:06:49,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712201628] [2019-10-13 18:06:49,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468312922] [2019-10-13 18:06:49,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)