java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum10_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 08:56:16,795 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:56:16,796 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:56:16,811 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:56:16,811 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:56:16,812 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:56:16,812 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:56:16,815 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:56:16,816 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:56:16,816 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:56:16,817 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:56:16,817 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:56:16,819 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:56:16,819 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:56:16,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:56:16,821 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:56:16,822 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:56:16,823 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:56:16,823 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:56:16,824 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:56:16,832 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 08:56:16,832 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 08:56:16,832 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 08:56:16,833 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 08:56:16,833 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 08:56:16,834 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 08:56:16,834 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 08:56:16,837 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 08:56:16,837 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 08:56:16,838 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:56:16,838 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:56:16,838 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 08:56:16,845 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:56:16,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:56:16,847 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:56:16,847 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:56:16,847 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:56:16,847 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:56:16,848 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:56:16,848 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:56:16,848 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:56:16,848 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:56:16,848 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:56:16,848 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:56:16,848 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 08:56:16,848 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:56:16,848 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 08:56:16,849 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:56:16,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:56:16,849 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:56:16,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:56:16,850 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:56:16,850 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:56:16,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:56:16,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:56:16,850 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:56:16,851 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:56:16,856 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:56:16,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:56:16,892 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:56:16,895 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:56:16,895 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:56:16,896 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:56:16,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2018-01-31 08:56:16,967 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:56:16,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:56:16,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:56:16,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:56:16,972 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:56:16,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:56:16" (1/1) ... [2018-01-31 08:56:16,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10dcf032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:16, skipping insertion in model container [2018-01-31 08:56:16,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:56:16" (1/1) ... [2018-01-31 08:56:16,983 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:56:16,992 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:56:17,064 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:56:17,077 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:56:17,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17 WrapperNode [2018-01-31 08:56:17,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:56:17,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:56:17,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:56:17,082 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:56:17,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (1/1) ... [2018-01-31 08:56:17,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (1/1) ... [2018-01-31 08:56:17,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (1/1) ... [2018-01-31 08:56:17,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (1/1) ... [2018-01-31 08:56:17,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (1/1) ... [2018-01-31 08:56:17,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (1/1) ... [2018-01-31 08:56:17,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (1/1) ... [2018-01-31 08:56:17,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:56:17,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:56:17,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:56:17,103 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:56:17,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (1/1) ... No working directory specified, using /home/daniel/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 [2018-01-31 08:56:17,148 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:56:17,148 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:56:17,148 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-31 08:56:17,148 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-31 08:56:17,148 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:56:17,148 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:56:17,148 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:56:17,149 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:56:17,503 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:56:17,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:56:17 BoogieIcfgContainer [2018-01-31 08:56:17,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:56:17,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:56:17,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:56:17,506 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:56:17,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:56:16" (1/3) ... [2018-01-31 08:56:17,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484dc0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:56:17, skipping insertion in model container [2018-01-31 08:56:17,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:56:17" (2/3) ... [2018-01-31 08:56:17,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484dc0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:56:17, skipping insertion in model container [2018-01-31 08:56:17,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:56:17" (3/3) ... [2018-01-31 08:56:17,508 INFO L107 eAbstractionObserver]: Analyzing ICFG rangesum10_false-unreach-call_true-termination.i [2018-01-31 08:56:17,513 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:56:17,518 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 08:56:17,547 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:56:17,547 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:56:17,547 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:56:17,548 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:56:17,548 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:56:17,548 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:56:17,548 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:56:17,548 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:56:17,548 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:56:17,558 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2018-01-31 08:56:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 08:56:17,563 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:17,563 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:17,563 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 08:56:17,566 INFO L82 PathProgramCache]: Analyzing trace with hash 540696337, now seen corresponding path program 1 times [2018-01-31 08:56:17,567 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:17,567 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:17,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:17,595 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:17,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:17,633 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:56:17,650 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 08:56:17,650 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:56:17,650 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 08:56:17,675 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:56:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:17,728 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-31 08:56:17,769 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:56:17,769 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:56:17,770 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:56:17,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:56:17,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:56:17,779 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2018-01-31 08:56:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:17,799 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2018-01-31 08:56:17,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:56:17,800 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 78 [2018-01-31 08:56:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:17,806 INFO L225 Difference]: With dead ends: 157 [2018-01-31 08:56:17,807 INFO L226 Difference]: Without dead ends: 81 [2018-01-31 08:56:17,809 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:56:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-31 08:56:17,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-01-31 08:56:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-31 08:56:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-31 08:56:17,897 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 78 [2018-01-31 08:56:17,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:17,897 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-31 08:56:17,899 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:56:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-31 08:56:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-31 08:56:17,902 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:17,902 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:17,902 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 08:56:17,902 INFO L82 PathProgramCache]: Analyzing trace with hash -199678615, now seen corresponding path program 1 times [2018-01-31 08:56:17,902 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:17,902 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:17,903 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:17,903 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:17,903 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:17,916 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:56:17,959 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 08:56:17,959 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:56:17,959 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 08:56:17,967 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:56:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:18,000 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-31 08:56:18,042 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:56:18,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:56:18,043 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:56:18,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:56:18,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:56:18,043 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 3 states. [2018-01-31 08:56:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:18,113 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2018-01-31 08:56:18,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:56:18,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2018-01-31 08:56:18,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:18,115 INFO L225 Difference]: With dead ends: 150 [2018-01-31 08:56:18,115 INFO L226 Difference]: Without dead ends: 88 [2018-01-31 08:56:18,116 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:56:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-31 08:56:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-01-31 08:56:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 08:56:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2018-01-31 08:56:18,122 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 83 [2018-01-31 08:56:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:18,123 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2018-01-31 08:56:18,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:56:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2018-01-31 08:56:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-31 08:56:18,126 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:18,126 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:18,126 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 08:56:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1465441618, now seen corresponding path program 1 times [2018-01-31 08:56:18,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:18,126 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:18,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:18,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:18,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:18,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:56:18,196 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 08:56:18,196 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:56:18,196 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:56:18,202 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:18,231 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-31 08:56:18,291 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:56:18,291 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:56:18,291 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:56:18,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:56:18,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:56:18,292 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 3 states. [2018-01-31 08:56:18,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:18,796 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2018-01-31 08:56:18,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:56:18,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2018-01-31 08:56:18,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:18,799 INFO L225 Difference]: With dead ends: 151 [2018-01-31 08:56:18,799 INFO L226 Difference]: Without dead ends: 96 [2018-01-31 08:56:18,799 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:56:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-31 08:56:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2018-01-31 08:56:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-31 08:56:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2018-01-31 08:56:18,805 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 91 [2018-01-31 08:56:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:18,806 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2018-01-31 08:56:18,806 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:56:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2018-01-31 08:56:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-31 08:56:18,807 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:18,807 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:18,807 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 08:56:18,807 INFO L82 PathProgramCache]: Analyzing trace with hash 280349970, now seen corresponding path program 1 times [2018-01-31 08:56:18,807 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:18,807 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:18,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:18,808 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:18,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:18,815 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:56:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-31 08:56:18,916 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:56:18,916 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:56:18,920 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:18,949 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-31 08:56:18,991 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:18,991 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:56:18,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:56:18,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:56:18,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:56:18,992 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 6 states. [2018-01-31 08:56:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:19,161 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2018-01-31 08:56:19,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:56:19,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-01-31 08:56:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:19,162 INFO L225 Difference]: With dead ends: 177 [2018-01-31 08:56:19,162 INFO L226 Difference]: Without dead ends: 108 [2018-01-31 08:56:19,163 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:56:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-01-31 08:56:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2018-01-31 08:56:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-31 08:56:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2018-01-31 08:56:19,167 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 91 [2018-01-31 08:56:19,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:19,167 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2018-01-31 08:56:19,167 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:56:19,167 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2018-01-31 08:56:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-31 08:56:19,168 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:19,169 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:19,169 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 08:56:19,169 INFO L82 PathProgramCache]: Analyzing trace with hash -253115437, now seen corresponding path program 1 times [2018-01-31 08:56:19,169 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:19,169 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:19,169 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:19,170 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:19,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:19,178 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:56:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-01-31 08:56:19,265 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:56:19,265 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:56:19,284 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:19,319 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-31 08:56:19,441 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:19,441 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:56:19,441 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:56:19,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:56:19,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:56:19,442 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 6 states. [2018-01-31 08:56:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:19,622 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2018-01-31 08:56:19,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:56:19,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-01-31 08:56:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:19,624 INFO L225 Difference]: With dead ends: 181 [2018-01-31 08:56:19,624 INFO L226 Difference]: Without dead ends: 116 [2018-01-31 08:56:19,625 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:56:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-31 08:56:19,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2018-01-31 08:56:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 08:56:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-01-31 08:56:19,630 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 117 [2018-01-31 08:56:19,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:19,630 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-01-31 08:56:19,630 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:56:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-01-31 08:56:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-01-31 08:56:19,631 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:19,631 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:19,631 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 08:56:19,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1180114590, now seen corresponding path program 1 times [2018-01-31 08:56:19,632 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:19,632 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:19,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:19,632 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:19,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:19,644 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:56:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-01-31 08:56:19,701 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:56:19,701 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:56:19,708 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:19,737 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-01-31 08:56:19,876 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:56:19,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 08:56:19,876 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 08:56:19,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 08:56:19,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 08:56:19,877 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 10 states. [2018-01-31 08:56:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:20,069 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2018-01-31 08:56:20,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 08:56:20,071 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2018-01-31 08:56:20,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:20,071 INFO L225 Difference]: With dead ends: 215 [2018-01-31 08:56:20,072 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 08:56:20,072 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 08:56:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 08:56:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 08:56:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 08:56:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2018-01-31 08:56:20,084 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 143 [2018-01-31 08:56:20,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:20,088 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2018-01-31 08:56:20,088 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 08:56:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2018-01-31 08:56:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-01-31 08:56:20,089 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:20,089 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:20,089 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 08:56:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1412228734, now seen corresponding path program 2 times [2018-01-31 08:56:20,089 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:20,089 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:20,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:20,090 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:20,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:20,105 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:56:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2018-01-31 08:56:20,334 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:56:20,334 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-31 08:56:20,334 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:56:20,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:56:20,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:56:20,334 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 9 states. [2018-01-31 08:56:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:20,521 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2018-01-31 08:56:20,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:56:20,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2018-01-31 08:56:20,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:20,522 INFO L225 Difference]: With dead ends: 210 [2018-01-31 08:56:20,522 INFO L226 Difference]: Without dead ends: 204 [2018-01-31 08:56:20,523 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-01-31 08:56:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-31 08:56:20,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2018-01-31 08:56:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-31 08:56:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2018-01-31 08:56:20,530 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 159 [2018-01-31 08:56:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:20,530 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2018-01-31 08:56:20,530 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:56:20,530 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2018-01-31 08:56:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-01-31 08:56:20,531 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:20,531 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:20,531 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 08:56:20,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1308538474, now seen corresponding path program 1 times [2018-01-31 08:56:20,532 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:20,532 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:20,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:20,532 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:20,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:20,539 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:20,539 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:20,539 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:20,564 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:20,586 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-01-31 08:56:20,780 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:20,780 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 08:56:20,781 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:56:20,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:56:20,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:56:20,781 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 9 states. [2018-01-31 08:56:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:20,885 INFO L93 Difference]: Finished difference Result 306 states and 334 transitions. [2018-01-31 08:56:20,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:56:20,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2018-01-31 08:56:20,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:20,886 INFO L225 Difference]: With dead ends: 306 [2018-01-31 08:56:20,886 INFO L226 Difference]: Without dead ends: 178 [2018-01-31 08:56:20,886 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:56:20,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-31 08:56:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2018-01-31 08:56:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 08:56:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2018-01-31 08:56:20,892 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 169 [2018-01-31 08:56:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:20,892 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2018-01-31 08:56:20,892 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:56:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2018-01-31 08:56:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-01-31 08:56:20,894 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:20,894 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:20,894 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 08:56:20,894 INFO L82 PathProgramCache]: Analyzing trace with hash 977564863, now seen corresponding path program 2 times [2018-01-31 08:56:20,894 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:20,894 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:20,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:20,895 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:20,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:20,901 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:20,901 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:20,901 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:20,917 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:56:20,932 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:20,948 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:20,950 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:20,952 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-01-31 08:56:21,015 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:21,016 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 08:56:21,016 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 08:56:21,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 08:56:21,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:56:21,016 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand 11 states. [2018-01-31 08:56:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:21,134 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2018-01-31 08:56:21,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:56:21,134 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2018-01-31 08:56:21,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:21,135 INFO L225 Difference]: With dead ends: 314 [2018-01-31 08:56:21,135 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 08:56:21,136 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:56:21,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 08:56:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 08:56:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 08:56:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2018-01-31 08:56:21,140 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 177 [2018-01-31 08:56:21,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:21,140 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2018-01-31 08:56:21,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 08:56:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2018-01-31 08:56:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-01-31 08:56:21,142 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:21,142 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:21,142 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 08:56:21,142 INFO L82 PathProgramCache]: Analyzing trace with hash 220358376, now seen corresponding path program 3 times [2018-01-31 08:56:21,142 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:21,142 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:21,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:21,143 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:21,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:21,149 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:21,149 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:21,149 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:21,160 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:56:21,169 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:21,173 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:21,173 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:21,175 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2018-01-31 08:56:21,236 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:56:21,236 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 08:56:21,236 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 08:56:21,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 08:56:21,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-31 08:56:21,236 INFO L87 Difference]: Start difference. First operand 181 states and 195 transitions. Second operand 5 states. [2018-01-31 08:56:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:21,262 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2018-01-31 08:56:21,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 08:56:21,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-01-31 08:56:21,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:21,263 INFO L225 Difference]: With dead ends: 313 [2018-01-31 08:56:21,263 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 08:56:21,263 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-31 08:56:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 08:56:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 179. [2018-01-31 08:56:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 08:56:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2018-01-31 08:56:21,268 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 191 transitions. Word has length 185 [2018-01-31 08:56:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:21,268 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 191 transitions. [2018-01-31 08:56:21,268 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 08:56:21,268 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 191 transitions. [2018-01-31 08:56:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-01-31 08:56:21,269 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:21,269 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:21,269 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 08:56:21,270 INFO L82 PathProgramCache]: Analyzing trace with hash -908536472, now seen corresponding path program 1 times [2018-01-31 08:56:21,270 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:21,270 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:21,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:21,270 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:21,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:21,276 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:21,276 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:21,276 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:56:21,298 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:21,324 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-31 08:56:21,743 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:21,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 08:56:21,744 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:56:21,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:56:21,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:56:21,744 INFO L87 Difference]: Start difference. First operand 179 states and 191 transitions. Second operand 13 states. [2018-01-31 08:56:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:21,847 INFO L93 Difference]: Finished difference Result 318 states and 342 transitions. [2018-01-31 08:56:21,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 08:56:21,854 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2018-01-31 08:56:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:21,855 INFO L225 Difference]: With dead ends: 318 [2018-01-31 08:56:21,855 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 08:56:21,855 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 08:56:21,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 08:56:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 08:56:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 08:56:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2018-01-31 08:56:21,860 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 205 [2018-01-31 08:56:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:21,860 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2018-01-31 08:56:21,860 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:56:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2018-01-31 08:56:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-31 08:56:21,861 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:21,861 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:21,861 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 08:56:21,862 INFO L82 PathProgramCache]: Analyzing trace with hash 50552849, now seen corresponding path program 2 times [2018-01-31 08:56:21,862 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:21,862 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:21,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:21,862 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:21,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:21,869 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:21,869 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:21,869 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:56:21,874 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:21,884 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:21,897 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:21,900 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:21,902 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-31 08:56:22,074 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:22,074 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 08:56:22,075 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 08:56:22,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 08:56:22,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:56:22,075 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 15 states. [2018-01-31 08:56:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:22,190 INFO L93 Difference]: Finished difference Result 326 states and 350 transitions. [2018-01-31 08:56:22,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 08:56:22,201 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-01-31 08:56:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:22,201 INFO L225 Difference]: With dead ends: 326 [2018-01-31 08:56:22,201 INFO L226 Difference]: Without dead ends: 200 [2018-01-31 08:56:22,202 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 08:56:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-31 08:56:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2018-01-31 08:56:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-31 08:56:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2018-01-31 08:56:22,206 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 213 [2018-01-31 08:56:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:22,206 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2018-01-31 08:56:22,206 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 08:56:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2018-01-31 08:56:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-31 08:56:22,207 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:22,207 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:22,207 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 08:56:22,207 INFO L82 PathProgramCache]: Analyzing trace with hash 925970874, now seen corresponding path program 3 times [2018-01-31 08:56:22,207 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:22,207 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:22,208 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:22,208 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:22,208 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:22,220 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:22,220 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:22,220 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:22,225 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:56:22,237 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:22,242 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:22,248 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:22,250 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:22,252 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 106 proven. 5 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2018-01-31 08:56:22,323 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:22,323 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 08:56:22,323 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 08:56:22,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 08:56:22,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 08:56:22,324 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 7 states. [2018-01-31 08:56:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:22,382 INFO L93 Difference]: Finished difference Result 331 states and 364 transitions. [2018-01-31 08:56:22,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:56:22,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2018-01-31 08:56:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:22,384 INFO L225 Difference]: With dead ends: 331 [2018-01-31 08:56:22,384 INFO L226 Difference]: Without dead ends: 212 [2018-01-31 08:56:22,384 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:56:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-31 08:56:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2018-01-31 08:56:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 08:56:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2018-01-31 08:56:22,389 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 221 [2018-01-31 08:56:22,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:22,389 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2018-01-31 08:56:22,389 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 08:56:22,389 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2018-01-31 08:56:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-01-31 08:56:22,390 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:22,390 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:22,390 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 08:56:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash -451765490, now seen corresponding path program 4 times [2018-01-31 08:56:22,390 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:22,390 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:22,391 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:22,391 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:22,391 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:22,397 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:22,398 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:22,398 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:22,411 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:56:22,449 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:22,451 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2018-01-31 08:56:22,629 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:22,629 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-31 08:56:22,630 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 08:56:22,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 08:56:22,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 08:56:22,630 INFO L87 Difference]: Start difference. First operand 205 states and 218 transitions. Second operand 17 states. [2018-01-31 08:56:22,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:22,788 INFO L93 Difference]: Finished difference Result 354 states and 380 transitions. [2018-01-31 08:56:22,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:56:22,797 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 251 [2018-01-31 08:56:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:22,798 INFO L225 Difference]: With dead ends: 354 [2018-01-31 08:56:22,798 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 08:56:22,799 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:56:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 08:56:22,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 08:56:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 08:56:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2018-01-31 08:56:22,803 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 251 [2018-01-31 08:56:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:22,803 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2018-01-31 08:56:22,803 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 08:56:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2018-01-31 08:56:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-01-31 08:56:22,804 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:22,804 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:22,804 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 08:56:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash 184477175, now seen corresponding path program 5 times [2018-01-31 08:56:22,804 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:22,804 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:22,805 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:22,805 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:22,805 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:22,812 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:22,812 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:22,812 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:56:22,818 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:22,828 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:22,829 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:22,830 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:22,832 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:22,836 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:22,840 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:22,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:22,848 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:22,850 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 171 proven. 12 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2018-01-31 08:56:23,251 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:23,251 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 08:56:23,251 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 08:56:23,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 08:56:23,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 08:56:23,252 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 7 states. [2018-01-31 08:56:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:23,437 INFO L93 Difference]: Finished difference Result 350 states and 383 transitions. [2018-01-31 08:56:23,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:56:23,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2018-01-31 08:56:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:23,442 INFO L225 Difference]: With dead ends: 350 [2018-01-31 08:56:23,442 INFO L226 Difference]: Without dead ends: 221 [2018-01-31 08:56:23,442 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:56:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-31 08:56:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2018-01-31 08:56:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-31 08:56:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 232 transitions. [2018-01-31 08:56:23,447 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 232 transitions. Word has length 259 [2018-01-31 08:56:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:23,447 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 232 transitions. [2018-01-31 08:56:23,448 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 08:56:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 232 transitions. [2018-01-31 08:56:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-01-31 08:56:23,448 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:23,449 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:56:23,449 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 08:56:23,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1105735631, now seen corresponding path program 6 times [2018-01-31 08:56:23,449 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:23,449 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:23,449 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:23,449 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:23,449 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:23,460 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:23,460 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:23,460 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:23,479 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:56:23,493 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:23,505 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:23,509 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:23,513 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:23,522 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:23,662 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:23,694 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:23,695 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:23,697 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 396 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-31 08:56:23,776 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:23,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 08:56:23,777 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 08:56:23,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 08:56:23,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 08:56:23,777 INFO L87 Difference]: Start difference. First operand 219 states and 232 transitions. Second operand 7 states. [2018-01-31 08:56:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:23,837 INFO L93 Difference]: Finished difference Result 308 states and 327 transitions. [2018-01-31 08:56:23,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:56:23,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2018-01-31 08:56:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:23,848 INFO L225 Difference]: With dead ends: 308 [2018-01-31 08:56:23,848 INFO L226 Difference]: Without dead ends: 245 [2018-01-31 08:56:23,849 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:56:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-31 08:56:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 235. [2018-01-31 08:56:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 08:56:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 248 transitions. [2018-01-31 08:56:23,853 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 248 transitions. Word has length 277 [2018-01-31 08:56:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:23,853 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 248 transitions. [2018-01-31 08:56:23,853 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 08:56:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 248 transitions. [2018-01-31 08:56:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-01-31 08:56:23,854 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:23,854 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:23,854 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 08:56:23,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1157525306, now seen corresponding path program 7 times [2018-01-31 08:56:23,855 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:23,855 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:23,855 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:23,855 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:23,855 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:23,861 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:23,862 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:23,862 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:23,868 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:23,898 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2018-01-31 08:56:24,186 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:24,186 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-31 08:56:24,186 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:56:24,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:56:24,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:56:24,187 INFO L87 Difference]: Start difference. First operand 235 states and 248 transitions. Second operand 19 states. [2018-01-31 08:56:24,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:24,384 INFO L93 Difference]: Finished difference Result 406 states and 432 transitions. [2018-01-31 08:56:24,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:56:24,386 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 285 [2018-01-31 08:56:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:24,386 INFO L225 Difference]: With dead ends: 406 [2018-01-31 08:56:24,386 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 08:56:24,387 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 08:56:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 08:56:24,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-01-31 08:56:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-31 08:56:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 256 transitions. [2018-01-31 08:56:24,392 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 256 transitions. Word has length 285 [2018-01-31 08:56:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:24,392 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 256 transitions. [2018-01-31 08:56:24,392 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:56:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 256 transitions. [2018-01-31 08:56:24,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-01-31 08:56:24,393 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:24,394 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:24,394 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 08:56:24,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1465786001, now seen corresponding path program 8 times [2018-01-31 08:56:24,394 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:24,394 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:24,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:24,394 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:24,395 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:24,404 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:24,404 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:24,404 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:24,418 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:56:24,428 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:24,447 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:24,450 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:24,454 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2018-01-31 08:56:24,670 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:24,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-31 08:56:24,671 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:56:24,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:56:24,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:56:24,671 INFO L87 Difference]: Start difference. First operand 243 states and 256 transitions. Second operand 21 states. [2018-01-31 08:56:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:25,149 INFO L93 Difference]: Finished difference Result 409 states and 435 transitions. [2018-01-31 08:56:25,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 08:56:25,149 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 293 [2018-01-31 08:56:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:25,150 INFO L225 Difference]: With dead ends: 409 [2018-01-31 08:56:25,150 INFO L226 Difference]: Without dead ends: 251 [2018-01-31 08:56:25,150 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 08:56:25,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-01-31 08:56:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-01-31 08:56:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-01-31 08:56:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 264 transitions. [2018-01-31 08:56:25,154 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 264 transitions. Word has length 293 [2018-01-31 08:56:25,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:25,154 INFO L432 AbstractCegarLoop]: Abstraction has 251 states and 264 transitions. [2018-01-31 08:56:25,154 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:56:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 264 transitions. [2018-01-31 08:56:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-01-31 08:56:25,155 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:25,156 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:25,156 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 08:56:25,156 INFO L82 PathProgramCache]: Analyzing trace with hash 975141144, now seen corresponding path program 9 times [2018-01-31 08:56:25,156 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:25,156 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:25,156 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:25,156 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:25,156 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:25,163 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:25,163 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:25,163 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:25,181 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:56:25,192 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:25,197 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:25,243 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:25,258 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:25,293 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:25,294 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:25,296 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 264 proven. 20 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2018-01-31 08:56:25,951 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:25,951 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 08:56:25,951 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:56:25,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:56:25,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:56:25,952 INFO L87 Difference]: Start difference. First operand 251 states and 264 transitions. Second operand 9 states. [2018-01-31 08:56:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:26,365 INFO L93 Difference]: Finished difference Result 419 states and 454 transitions. [2018-01-31 08:56:26,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:56:26,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 301 [2018-01-31 08:56:26,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:26,366 INFO L225 Difference]: With dead ends: 419 [2018-01-31 08:56:26,366 INFO L226 Difference]: Without dead ends: 268 [2018-01-31 08:56:26,366 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:56:26,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-01-31 08:56:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 261. [2018-01-31 08:56:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 08:56:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 275 transitions. [2018-01-31 08:56:26,371 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 275 transitions. Word has length 301 [2018-01-31 08:56:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:26,371 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 275 transitions. [2018-01-31 08:56:26,371 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:56:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 275 transitions. [2018-01-31 08:56:26,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-01-31 08:56:26,372 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:26,372 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:26,372 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 08:56:26,373 INFO L82 PathProgramCache]: Analyzing trace with hash -16885140, now seen corresponding path program 10 times [2018-01-31 08:56:26,373 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:26,373 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:26,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:26,373 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:26,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:26,380 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:26,380 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:26,380 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:26,394 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:56:26,428 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:26,430 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 339 proven. 27 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2018-01-31 08:56:26,533 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:26,533 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 08:56:26,534 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:56:26,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:56:26,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:56:26,534 INFO L87 Difference]: Start difference. First operand 261 states and 275 transitions. Second operand 9 states. [2018-01-31 08:56:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:26,581 INFO L93 Difference]: Finished difference Result 430 states and 465 transitions. [2018-01-31 08:56:26,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:56:26,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 331 [2018-01-31 08:56:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:26,583 INFO L225 Difference]: With dead ends: 430 [2018-01-31 08:56:26,583 INFO L226 Difference]: Without dead ends: 269 [2018-01-31 08:56:26,583 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:56:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-01-31 08:56:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2018-01-31 08:56:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-01-31 08:56:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 281 transitions. [2018-01-31 08:56:26,588 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 281 transitions. Word has length 331 [2018-01-31 08:56:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:26,588 INFO L432 AbstractCegarLoop]: Abstraction has 267 states and 281 transitions. [2018-01-31 08:56:26,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:56:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 281 transitions. [2018-01-31 08:56:26,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-01-31 08:56:26,589 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:26,590 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 12, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:26,590 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 08:56:26,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1463538300, now seen corresponding path program 11 times [2018-01-31 08:56:26,590 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:26,590 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:26,590 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:26,590 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:26,590 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:26,597 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:26,597 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:26,597 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:26,614 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:56:26,623 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,625 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,626 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,629 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,632 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,635 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,640 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,646 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,654 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:26,656 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:26,658 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 486 proven. 48 refuted. 0 times theorem prover too weak. 1442 trivial. 0 not checked. [2018-01-31 08:56:26,888 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:26,888 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 08:56:26,889 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 08:56:26,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 08:56:26,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:56:26,889 INFO L87 Difference]: Start difference. First operand 267 states and 281 transitions. Second operand 11 states. [2018-01-31 08:56:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:27,035 INFO L93 Difference]: Finished difference Result 442 states and 477 transitions. [2018-01-31 08:56:27,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:56:27,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 349 [2018-01-31 08:56:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:27,038 INFO L225 Difference]: With dead ends: 442 [2018-01-31 08:56:27,038 INFO L226 Difference]: Without dead ends: 275 [2018-01-31 08:56:27,038 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:56:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-01-31 08:56:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2018-01-31 08:56:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-01-31 08:56:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 287 transitions. [2018-01-31 08:56:27,042 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 287 transitions. Word has length 349 [2018-01-31 08:56:27,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:27,042 INFO L432 AbstractCegarLoop]: Abstraction has 273 states and 287 transitions. [2018-01-31 08:56:27,042 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 08:56:27,043 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 287 transitions. [2018-01-31 08:56:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-01-31 08:56:27,044 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:27,044 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 15, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:27,044 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 08:56:27,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1170281828, now seen corresponding path program 12 times [2018-01-31 08:56:27,044 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:27,044 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:27,045 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:27,045 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:27,045 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:27,052 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:27,052 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:27,052 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:27,068 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:56:27,080 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:27,083 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:27,087 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:27,092 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:27,099 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:27,537 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:27,596 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:27,939 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:28,327 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:28,332 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:28,336 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2390 backedges. 928 proven. 30 refuted. 0 times theorem prover too weak. 1432 trivial. 0 not checked. [2018-01-31 08:56:28,481 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:28,481 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 08:56:28,481 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:56:28,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:56:28,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:56:28,481 INFO L87 Difference]: Start difference. First operand 273 states and 287 transitions. Second operand 9 states. [2018-01-31 08:56:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:28,549 INFO L93 Difference]: Finished difference Result 384 states and 405 transitions. [2018-01-31 08:56:28,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:56:28,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 367 [2018-01-31 08:56:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:28,559 INFO L225 Difference]: With dead ends: 384 [2018-01-31 08:56:28,559 INFO L226 Difference]: Without dead ends: 299 [2018-01-31 08:56:28,560 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:56:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-01-31 08:56:28,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2018-01-31 08:56:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-01-31 08:56:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 303 transitions. [2018-01-31 08:56:28,564 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 303 transitions. Word has length 367 [2018-01-31 08:56:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:28,564 INFO L432 AbstractCegarLoop]: Abstraction has 289 states and 303 transitions. [2018-01-31 08:56:28,574 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:56:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 303 transitions. [2018-01-31 08:56:28,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-01-31 08:56:28,575 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:28,576 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 15, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:28,576 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 08:56:28,576 INFO L82 PathProgramCache]: Analyzing trace with hash -233844909, now seen corresponding path program 13 times [2018-01-31 08:56:28,576 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:28,576 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:28,576 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:28,576 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:28,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:28,590 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:28,590 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:28,590 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:28,600 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:56:28,646 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2416 backedges. 657 proven. 75 refuted. 0 times theorem prover too weak. 1684 trivial. 0 not checked. [2018-01-31 08:56:29,004 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:29,004 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 08:56:29,004 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:56:29,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:56:29,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:56:29,004 INFO L87 Difference]: Start difference. First operand 289 states and 303 transitions. Second operand 13 states. [2018-01-31 08:56:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:29,115 INFO L93 Difference]: Finished difference Result 484 states and 519 transitions. [2018-01-31 08:56:29,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 08:56:29,116 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 375 [2018-01-31 08:56:29,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:29,118 INFO L225 Difference]: With dead ends: 484 [2018-01-31 08:56:29,118 INFO L226 Difference]: Without dead ends: 295 [2018-01-31 08:56:29,118 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 08:56:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-01-31 08:56:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-01-31 08:56:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-01-31 08:56:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 309 transitions. [2018-01-31 08:56:29,128 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 309 transitions. Word has length 375 [2018-01-31 08:56:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:29,128 INFO L432 AbstractCegarLoop]: Abstraction has 295 states and 309 transitions. [2018-01-31 08:56:29,128 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:56:29,128 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 309 transitions. [2018-01-31 08:56:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-01-31 08:56:29,130 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:29,130 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:29,130 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 08:56:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash 248779051, now seen corresponding path program 14 times [2018-01-31 08:56:29,130 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:29,130 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:29,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:29,131 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:56:29,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:29,150 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:29,150 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:29,150 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:56:29,170 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:29,186 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:29,212 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:29,217 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:29,219 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 1132 proven. 246 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2018-01-31 08:56:29,421 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:29,421 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-31 08:56:29,421 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:56:29,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:56:29,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:56:29,422 INFO L87 Difference]: Start difference. First operand 295 states and 309 transitions. Second operand 21 states. [2018-01-31 08:56:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:29,671 INFO L93 Difference]: Finished difference Result 500 states and 536 transitions. [2018-01-31 08:56:29,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 08:56:29,672 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 393 [2018-01-31 08:56:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:29,673 INFO L225 Difference]: With dead ends: 500 [2018-01-31 08:56:29,673 INFO L226 Difference]: Without dead ends: 305 [2018-01-31 08:56:29,674 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 08:56:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-01-31 08:56:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-01-31 08:56:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-01-31 08:56:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 320 transitions. [2018-01-31 08:56:29,678 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 320 transitions. Word has length 393 [2018-01-31 08:56:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:29,678 INFO L432 AbstractCegarLoop]: Abstraction has 305 states and 320 transitions. [2018-01-31 08:56:29,678 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:56:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 320 transitions. [2018-01-31 08:56:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-01-31 08:56:29,680 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:29,680 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 18, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:29,680 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 08:56:29,680 INFO L82 PathProgramCache]: Analyzing trace with hash -360374849, now seen corresponding path program 15 times [2018-01-31 08:56:29,680 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:29,680 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:29,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:29,681 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:29,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:29,688 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:29,688 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:29,688 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:29,704 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:56:29,717 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:29,721 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:29,728 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:29,745 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:29,770 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:30,197 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:56:30,198 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:30,201 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3526 backedges. 1432 proven. 56 refuted. 0 times theorem prover too weak. 2038 trivial. 0 not checked. [2018-01-31 08:56:30,409 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:30,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 08:56:30,409 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 08:56:30,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 08:56:30,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:56:30,410 INFO L87 Difference]: Start difference. First operand 305 states and 320 transitions. Second operand 11 states. [2018-01-31 08:56:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:30,581 INFO L93 Difference]: Finished difference Result 432 states and 455 transitions. [2018-01-31 08:56:30,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:56:30,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 423 [2018-01-31 08:56:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:30,582 INFO L225 Difference]: With dead ends: 432 [2018-01-31 08:56:30,582 INFO L226 Difference]: Without dead ends: 331 [2018-01-31 08:56:30,582 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:56:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-01-31 08:56:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 321. [2018-01-31 08:56:30,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-01-31 08:56:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 336 transitions. [2018-01-31 08:56:30,586 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 336 transitions. Word has length 423 [2018-01-31 08:56:30,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:30,587 INFO L432 AbstractCegarLoop]: Abstraction has 321 states and 336 transitions. [2018-01-31 08:56:30,587 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 08:56:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 336 transitions. [2018-01-31 08:56:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-01-31 08:56:30,595 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:30,596 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 18, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:30,596 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 08:56:30,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1964798602, now seen corresponding path program 16 times [2018-01-31 08:56:30,596 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:30,596 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:30,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:30,596 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:30,597 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:30,605 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:30,605 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:30,605 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:30,615 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:56:30,652 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:30,655 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3560 backedges. 1432 proven. 90 refuted. 0 times theorem prover too weak. 2038 trivial. 0 not checked. [2018-01-31 08:56:30,760 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:30,760 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 08:56:30,760 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:56:30,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:56:30,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:56:30,761 INFO L87 Difference]: Start difference. First operand 321 states and 336 transitions. Second operand 13 states. [2018-01-31 08:56:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:30,835 INFO L93 Difference]: Finished difference Result 448 states and 471 transitions. [2018-01-31 08:56:30,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 08:56:30,835 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 431 [2018-01-31 08:56:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:30,836 INFO L225 Difference]: With dead ends: 448 [2018-01-31 08:56:30,836 INFO L226 Difference]: Without dead ends: 347 [2018-01-31 08:56:30,836 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 08:56:30,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-01-31 08:56:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 337. [2018-01-31 08:56:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-01-31 08:56:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 352 transitions. [2018-01-31 08:56:30,843 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 352 transitions. Word has length 431 [2018-01-31 08:56:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:30,843 INFO L432 AbstractCegarLoop]: Abstraction has 337 states and 352 transitions. [2018-01-31 08:56:30,843 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:56:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 352 transitions. [2018-01-31 08:56:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-01-31 08:56:30,845 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:30,845 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 18, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:30,845 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 08:56:30,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1773251027, now seen corresponding path program 17 times [2018-01-31 08:56:30,845 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:30,845 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:30,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:30,846 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:30,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:30,857 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:30,857 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:30,857 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:30,862 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:56:30,872 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,873 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,876 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,879 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,882 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,893 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,926 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:30,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:31,032 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:31,546 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:56:31,548 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:56:31,552 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:56:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3602 backedges. 1432 proven. 132 refuted. 0 times theorem prover too weak. 2038 trivial. 0 not checked. [2018-01-31 08:56:31,844 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:56:31,844 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 08:56:31,844 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 08:56:31,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 08:56:31,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:56:31,845 INFO L87 Difference]: Start difference. First operand 337 states and 352 transitions. Second operand 15 states. [2018-01-31 08:56:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:56:32,050 INFO L93 Difference]: Finished difference Result 464 states and 487 transitions. [2018-01-31 08:56:32,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 08:56:32,051 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 439 [2018-01-31 08:56:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:56:32,052 INFO L225 Difference]: With dead ends: 464 [2018-01-31 08:56:32,052 INFO L226 Difference]: Without dead ends: 363 [2018-01-31 08:56:32,052 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 08:56:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-01-31 08:56:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 353. [2018-01-31 08:56:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-01-31 08:56:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 368 transitions. [2018-01-31 08:56:32,059 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 368 transitions. Word has length 439 [2018-01-31 08:56:32,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:56:32,059 INFO L432 AbstractCegarLoop]: Abstraction has 353 states and 368 transitions. [2018-01-31 08:56:32,059 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 08:56:32,059 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 368 transitions. [2018-01-31 08:56:32,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-01-31 08:56:32,060 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:56:32,061 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 18, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:56:32,071 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 08:56:32,071 INFO L82 PathProgramCache]: Analyzing trace with hash 190609380, now seen corresponding path program 18 times [2018-01-31 08:56:32,071 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:56:32,071 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:56:32,071 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:32,071 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:56:32,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:56:32,078 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:56:32,078 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:56:32,078 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:56:32,090 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:56:32,103 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,105 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,109 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,165 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,170 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,184 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,199 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,223 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,360 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,438 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,587 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:56:32,748 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown