/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/cohendiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:16:04,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:16:04,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:16:04,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:16:04,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:16:04,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:16:04,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:16:04,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:16:04,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:16:04,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:16:04,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:16:04,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:16:04,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:16:04,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:16:04,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:16:04,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:16:04,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:16:04,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:16:04,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:16:04,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:16:04,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:16:04,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:16:04,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:16:04,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:16:04,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 22:16:04,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 22:16:04,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 22:16:04,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 22:16:04,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 22:16:04,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 22:16:04,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 22:16:04,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 22:16:04,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 22:16:04,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 22:16:04,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 22:16:04,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 22:16:04,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 22:16:04,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 22:16:04,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:16:04,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:16:04,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:16:04,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 22:16:04,610 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:16:04,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:16:04,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:16:04,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:16:04,613 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:16:04,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:16:04,613 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:16:04,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:16:04,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:16:04,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:16:04,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:16:04,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:16:04,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:16:04,615 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:16:04,615 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:16:04,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:16:04,615 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:16:04,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:16:04,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:16:04,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:16:04,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:16:04,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:16:04,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:16:04,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:16:04,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:16:04,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:16:04,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:16:04,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:16:04,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:16:04,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:16:04,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:16:04,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:16:04,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:16:04,968 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:16:04,968 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:16:04,969 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohendiv.c [2019-11-23 22:16:05,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47bf9b11b/f3719688095a449aa36c06c11fa181a1/FLAG9edbe0c6d [2019-11-23 22:16:05,504 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:16:05,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohendiv.c [2019-11-23 22:16:05,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47bf9b11b/f3719688095a449aa36c06c11fa181a1/FLAG9edbe0c6d [2019-11-23 22:16:05,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47bf9b11b/f3719688095a449aa36c06c11fa181a1 [2019-11-23 22:16:05,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:16:05,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:16:05,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:16:05,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:16:05,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:16:05,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:16:05" (1/1) ... [2019-11-23 22:16:05,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290dafc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:05, skipping insertion in model container [2019-11-23 22:16:05,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:16:05" (1/1) ... [2019-11-23 22:16:05,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:16:05,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:16:06,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:16:06,165 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:16:06,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:16:06,198 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:16:06,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06 WrapperNode [2019-11-23 22:16:06,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:16:06,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:16:06,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:16:06,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:16:06,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:16:06,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:16:06,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:16:06,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:16:06,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... [2019-11-23 22:16:06,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:16:06,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:16:06,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:16:06,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:16:06,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:16:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:16:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:16:06,709 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:16:06,709 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-23 22:16:06,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:16:06 BoogieIcfgContainer [2019-11-23 22:16:06,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:16:06,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:16:06,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:16:06,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:16:06,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:16:05" (1/3) ... [2019-11-23 22:16:06,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b55197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:16:06, skipping insertion in model container [2019-11-23 22:16:06,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:06" (2/3) ... [2019-11-23 22:16:06,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b55197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:16:06, skipping insertion in model container [2019-11-23 22:16:06,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:16:06" (3/3) ... [2019-11-23 22:16:06,725 INFO L109 eAbstractionObserver]: Analyzing ICFG cohendiv.c [2019-11-23 22:16:06,735 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:16:06,757 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-23 22:16:06,765 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-23 22:16:06,790 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:16:06,790 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:16:06,790 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:16:06,790 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:16:06,790 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:16:06,791 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:16:06,791 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:16:06,791 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:16:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-23 22:16:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-23 22:16:06,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:06,812 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-23 22:16:06,813 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:06,818 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-23 22:16:06,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:06,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023957155] [2019-11-23 22:16:06,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:06,896 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:06,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233473791] [2019-11-23 22:16:06,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:06,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-23 22:16:06,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:07,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023957155] [2019-11-23 22:16:07,013 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:07,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233473791] [2019-11-23 22:16:07,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:07,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:16:07,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612136910] [2019-11-23 22:16:07,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:16:07,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:07,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:16:07,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:16:07,037 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-23 22:16:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:07,173 INFO L93 Difference]: Finished difference Result 86 states and 115 transitions. [2019-11-23 22:16:07,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:16:07,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-23 22:16:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:07,185 INFO L225 Difference]: With dead ends: 86 [2019-11-23 22:16:07,186 INFO L226 Difference]: Without dead ends: 43 [2019-11-23 22:16:07,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:16:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-23 22:16:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2019-11-23 22:16:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-23 22:16:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2019-11-23 22:16:07,245 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 4 [2019-11-23 22:16:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:07,246 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2019-11-23 22:16:07,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:16:07,247 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2019-11-23 22:16:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:16:07,247 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:07,248 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:16:07,452 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:07,453 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:07,454 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-23 22:16:07,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:07,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440260338] [2019-11-23 22:16:07,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:07,463 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:07,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652820288] [2019-11-23 22:16:07,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:07,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-23 22:16:07,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:07,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440260338] [2019-11-23 22:16:07,516 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:07,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652820288] [2019-11-23 22:16:07,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:07,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:16:07,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749853593] [2019-11-23 22:16:07,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:16:07,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:07,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:16:07,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:16:07,521 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 4 states. [2019-11-23 22:16:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:07,642 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-23 22:16:07,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:16:07,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-23 22:16:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:07,644 INFO L225 Difference]: With dead ends: 62 [2019-11-23 22:16:07,645 INFO L226 Difference]: Without dead ends: 54 [2019-11-23 22:16:07,646 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:16:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-23 22:16:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2019-11-23 22:16:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-23 22:16:07,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-11-23 22:16:07,656 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 6 [2019-11-23 22:16:07,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:07,656 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-11-23 22:16:07,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:16:07,656 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-11-23 22:16:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:16:07,657 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:07,657 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:07,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:07,870 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:07,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:07,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1963542107, now seen corresponding path program 1 times [2019-11-23 22:16:07,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:07,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012242194] [2019-11-23 22:16:07,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:07,877 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:07,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846179552] [2019-11-23 22:16:07,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-23 22:16:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:07,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-23 22:16:07,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:07,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012242194] [2019-11-23 22:16:07,933 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:07,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846179552] [2019-11-23 22:16:07,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:07,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:16:07,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485895693] [2019-11-23 22:16:07,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:16:07,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:07,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:16:07,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:16:07,935 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2019-11-23 22:16:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:08,108 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2019-11-23 22:16:08,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:16:08,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-23 22:16:08,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:08,110 INFO L225 Difference]: With dead ends: 88 [2019-11-23 22:16:08,110 INFO L226 Difference]: Without dead ends: 82 [2019-11-23 22:16:08,112 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-23 22:16:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2019-11-23 22:16:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-23 22:16:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2019-11-23 22:16:08,154 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 9 [2019-11-23 22:16:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:08,155 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-11-23 22:16:08,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:16:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2019-11-23 22:16:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:16:08,156 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:08,156 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:08,360 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:08,360 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:08,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:08,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1326217983, now seen corresponding path program 1 times [2019-11-23 22:16:08,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:08,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456469855] [2019-11-23 22:16:08,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:08,367 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:08,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600014117] [2019-11-23 22:16:08,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:08,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 22:16:08,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:08,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:08,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456469855] [2019-11-23 22:16:08,425 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:08,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600014117] [2019-11-23 22:16:08,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:08,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:16:08,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882772702] [2019-11-23 22:16:08,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:16:08,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:08,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:16:08,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:16:08,428 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 5 states. [2019-11-23 22:16:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:08,511 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2019-11-23 22:16:08,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:16:08,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-23 22:16:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:08,513 INFO L225 Difference]: With dead ends: 65 [2019-11-23 22:16:08,513 INFO L226 Difference]: Without dead ends: 63 [2019-11-23 22:16:08,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:16:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-23 22:16:08,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-23 22:16:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-23 22:16:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2019-11-23 22:16:08,524 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 13 [2019-11-23 22:16:08,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:08,524 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2019-11-23 22:16:08,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:16:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2019-11-23 22:16:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:16:08,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:08,526 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:08,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:08,738 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:08,738 INFO L82 PathProgramCache]: Analyzing trace with hash 64703206, now seen corresponding path program 1 times [2019-11-23 22:16:08,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:08,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445826574] [2019-11-23 22:16:08,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:08,746 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:08,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57494114] [2019-11-23 22:16:08,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:08,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-23 22:16:08,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:08,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:08,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445826574] [2019-11-23 22:16:08,835 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:08,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57494114] [2019-11-23 22:16:08,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:08,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:16:08,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143864777] [2019-11-23 22:16:08,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:16:08,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:08,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:16:08,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:16:08,837 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 6 states. [2019-11-23 22:16:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:09,032 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2019-11-23 22:16:09,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:16:09,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-23 22:16:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:09,034 INFO L225 Difference]: With dead ends: 116 [2019-11-23 22:16:09,034 INFO L226 Difference]: Without dead ends: 110 [2019-11-23 22:16:09,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:16:09,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-23 22:16:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2019-11-23 22:16:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-23 22:16:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2019-11-23 22:16:09,047 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 18 [2019-11-23 22:16:09,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:09,047 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2019-11-23 22:16:09,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:16:09,048 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2019-11-23 22:16:09,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 22:16:09,048 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:09,049 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:09,260 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:09,261 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:09,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:09,261 INFO L82 PathProgramCache]: Analyzing trace with hash 353712754, now seen corresponding path program 1 times [2019-11-23 22:16:09,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:09,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937611235] [2019-11-23 22:16:09,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:09,267 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:09,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683478280] [2019-11-23 22:16:09,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:09,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-23 22:16:09,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:09,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937611235] [2019-11-23 22:16:09,364 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:09,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683478280] [2019-11-23 22:16:09,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:09,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:16:09,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481094867] [2019-11-23 22:16:09,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:16:09,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:09,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:16:09,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:16:09,368 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 6 states. [2019-11-23 22:16:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:09,536 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2019-11-23 22:16:09,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:16:09,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-23 22:16:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:09,538 INFO L225 Difference]: With dead ends: 133 [2019-11-23 22:16:09,538 INFO L226 Difference]: Without dead ends: 125 [2019-11-23 22:16:09,539 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:16:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-23 22:16:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 94. [2019-11-23 22:16:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-23 22:16:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2019-11-23 22:16:09,555 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 19 [2019-11-23 22:16:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:09,555 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2019-11-23 22:16:09,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:16:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2019-11-23 22:16:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-23 22:16:09,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:09,557 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:09,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:09,771 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:09,772 INFO L82 PathProgramCache]: Analyzing trace with hash -890359109, now seen corresponding path program 2 times [2019-11-23 22:16:09,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:09,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624034724] [2019-11-23 22:16:09,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:09,780 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:09,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539153705] [2019-11-23 22:16:09,780 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/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 [2019-11-23 22:16:09,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:16:09,817 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:09,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-23 22:16:09,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:09,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:09,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624034724] [2019-11-23 22:16:09,898 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:09,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539153705] [2019-11-23 22:16:09,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:09,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:09,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036768978] [2019-11-23 22:16:09,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:09,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:09,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:09,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:09,900 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 7 states. [2019-11-23 22:16:10,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:10,191 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2019-11-23 22:16:10,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:16:10,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-23 22:16:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:10,195 INFO L225 Difference]: With dead ends: 161 [2019-11-23 22:16:10,195 INFO L226 Difference]: Without dead ends: 155 [2019-11-23 22:16:10,196 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:16:10,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-11-23 22:16:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2019-11-23 22:16:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-23 22:16:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2019-11-23 22:16:10,212 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 27 [2019-11-23 22:16:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:10,212 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2019-11-23 22:16:10,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:10,213 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2019-11-23 22:16:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 22:16:10,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:10,214 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:10,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:10,418 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:10,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:10,419 INFO L82 PathProgramCache]: Analyzing trace with hash 811552061, now seen corresponding path program 1 times [2019-11-23 22:16:10,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:10,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076352459] [2019-11-23 22:16:10,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:10,425 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:10,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331673826] [2019-11-23 22:16:10,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/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 [2019-11-23 22:16:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:10,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-23 22:16:10,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:10,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076352459] [2019-11-23 22:16:10,542 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:10,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331673826] [2019-11-23 22:16:10,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:10,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:10,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117755251] [2019-11-23 22:16:10,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:10,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:10,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:10,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:10,544 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 7 states. [2019-11-23 22:16:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:10,785 INFO L93 Difference]: Finished difference Result 201 states and 225 transitions. [2019-11-23 22:16:10,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:16:10,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-11-23 22:16:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:10,787 INFO L225 Difference]: With dead ends: 201 [2019-11-23 22:16:10,788 INFO L226 Difference]: Without dead ends: 193 [2019-11-23 22:16:10,788 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:16:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-11-23 22:16:10,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 121. [2019-11-23 22:16:10,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-23 22:16:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2019-11-23 22:16:10,804 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 28 [2019-11-23 22:16:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:10,805 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2019-11-23 22:16:10,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2019-11-23 22:16:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-23 22:16:10,806 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:10,806 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2019-11-23 22:16:11,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:11,013 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:11,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:11,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1852720049, now seen corresponding path program 2 times [2019-11-23 22:16:11,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:11,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378078289] [2019-11-23 22:16:11,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:11,020 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:11,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733994100] [2019-11-23 22:16:11,021 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/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 [2019-11-23 22:16:11,062 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:16:11,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:11,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:16:11,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:11,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378078289] [2019-11-23 22:16:11,106 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:11,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733994100] [2019-11-23 22:16:11,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:11,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:16:11,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477162924] [2019-11-23 22:16:11,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:16:11,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:16:11,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:16:11,109 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand 5 states. [2019-11-23 22:16:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:11,174 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2019-11-23 22:16:11,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:16:11,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-23 22:16:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:11,176 INFO L225 Difference]: With dead ends: 234 [2019-11-23 22:16:11,176 INFO L226 Difference]: Without dead ends: 135 [2019-11-23 22:16:11,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:16:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-23 22:16:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2019-11-23 22:16:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-23 22:16:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 142 transitions. [2019-11-23 22:16:11,202 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 142 transitions. Word has length 32 [2019-11-23 22:16:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:11,202 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 142 transitions. [2019-11-23 22:16:11,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:16:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 142 transitions. [2019-11-23 22:16:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-23 22:16:11,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:11,210 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:11,421 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:11,421 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:11,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1581927046, now seen corresponding path program 3 times [2019-11-23 22:16:11,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:11,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288743350] [2019-11-23 22:16:11,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:11,427 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:11,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084161826] [2019-11-23 22:16:11,428 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:11,469 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 22:16:11,469 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:11,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-23 22:16:11,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:11,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:13,590 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-23 22:16:15,756 WARN L192 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 20 [2019-11-23 22:16:15,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-23 22:16:15,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288743350] [2019-11-23 22:16:15,792 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:15,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084161826] [2019-11-23 22:16:15,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:15,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:16:15,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206926008] [2019-11-23 22:16:15,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:16:15,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:15,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:16:15,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:16:15,794 INFO L87 Difference]: Start difference. First operand 127 states and 142 transitions. Second operand 8 states. [2019-11-23 22:16:24,049 WARN L192 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-11-23 22:16:28,230 WARN L192 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2019-11-23 22:16:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:28,502 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2019-11-23 22:16:28,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:16:28,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2019-11-23 22:16:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:28,504 INFO L225 Difference]: With dead ends: 149 [2019-11-23 22:16:28,504 INFO L226 Difference]: Without dead ends: 143 [2019-11-23 22:16:28,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:16:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-11-23 22:16:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 80. [2019-11-23 22:16:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-23 22:16:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2019-11-23 22:16:28,515 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 36 [2019-11-23 22:16:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:28,515 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2019-11-23 22:16:28,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:16:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2019-11-23 22:16:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-23 22:16:28,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:28,517 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:28,720 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:28,726 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:28,726 INFO L82 PathProgramCache]: Analyzing trace with hash 143011538, now seen corresponding path program 2 times [2019-11-23 22:16:28,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:28,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86568977] [2019-11-23 22:16:28,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:28,742 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:28,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846419868] [2019-11-23 22:16:28,742 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:28,789 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:16:28,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:28,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-23 22:16:28,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:28,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86568977] [2019-11-23 22:16:28,887 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:28,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846419868] [2019-11-23 22:16:28,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:28,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:16:28,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55927460] [2019-11-23 22:16:28,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:16:28,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:28,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:16:28,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:16:28,889 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 8 states. [2019-11-23 22:16:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:29,195 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2019-11-23 22:16:29,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-23 22:16:29,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-11-23 22:16:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:29,197 INFO L225 Difference]: With dead ends: 134 [2019-11-23 22:16:29,207 INFO L226 Difference]: Without dead ends: 126 [2019-11-23 22:16:29,208 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:16:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-23 22:16:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 89. [2019-11-23 22:16:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-23 22:16:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2019-11-23 22:16:29,221 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 37 [2019-11-23 22:16:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:29,223 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2019-11-23 22:16:29,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:16:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2019-11-23 22:16:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-23 22:16:29,226 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:29,226 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:29,430 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:29,431 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:29,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:29,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1368640356, now seen corresponding path program 3 times [2019-11-23 22:16:29,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:29,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802939597] [2019-11-23 22:16:29,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:29,454 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:29,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659438740] [2019-11-23 22:16:29,455 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/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 [2019-11-23 22:16:29,527 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-23 22:16:29,527 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:29,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-23 22:16:29,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:29,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:16:29,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802939597] [2019-11-23 22:16:29,614 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:29,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659438740] [2019-11-23 22:16:29,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:29,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:29,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303550837] [2019-11-23 22:16:29,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:29,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:29,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:29,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:29,617 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 7 states. [2019-11-23 22:16:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:29,757 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2019-11-23 22:16:29,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:16:29,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-23 22:16:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:29,759 INFO L225 Difference]: With dead ends: 99 [2019-11-23 22:16:29,759 INFO L226 Difference]: Without dead ends: 83 [2019-11-23 22:16:29,759 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:16:29,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-23 22:16:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2019-11-23 22:16:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-23 22:16:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2019-11-23 22:16:29,770 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 41 [2019-11-23 22:16:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:29,770 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2019-11-23 22:16:29,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2019-11-23 22:16:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-23 22:16:29,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:29,771 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:29,975 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:29,976 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:29,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:29,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1236581155, now seen corresponding path program 4 times [2019-11-23 22:16:29,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:29,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289648967] [2019-11-23 22:16:29,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:29,983 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:29,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026296345] [2019-11-23 22:16:29,983 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/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 [2019-11-23 22:16:30,019 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:16:30,019 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:30,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 38 conjunts are in the unsatisfiable core [2019-11-23 22:16:30,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:30,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:30,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:30,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:30,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289648967] [2019-11-23 22:16:30,326 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:30,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026296345] [2019-11-23 22:16:30,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:30,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-11-23 22:16:30,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428210489] [2019-11-23 22:16:30,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-23 22:16:30,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-23 22:16:30,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-11-23 22:16:30,329 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 14 states. [2019-11-23 22:16:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:31,503 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2019-11-23 22:16:31,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-23 22:16:31,504 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2019-11-23 22:16:31,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:31,505 INFO L225 Difference]: With dead ends: 152 [2019-11-23 22:16:31,505 INFO L226 Difference]: Without dead ends: 128 [2019-11-23 22:16:31,506 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2019-11-23 22:16:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-11-23 22:16:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2019-11-23 22:16:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-23 22:16:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2019-11-23 22:16:31,524 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 46 [2019-11-23 22:16:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:31,524 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2019-11-23 22:16:31,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-23 22:16:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2019-11-23 22:16:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-23 22:16:31,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:31,525 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:31,731 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:31,731 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:31,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:31,732 INFO L82 PathProgramCache]: Analyzing trace with hash -2063152334, now seen corresponding path program 5 times [2019-11-23 22:16:31,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:31,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426634999] [2019-11-23 22:16:31,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:31,737 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:31,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439739841] [2019-11-23 22:16:31,737 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:31,796 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-23 22:16:31,796 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:31,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-23 22:16:31,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:32,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426634999] [2019-11-23 22:16:32,037 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:32,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439739841] [2019-11-23 22:16:32,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:32,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-11-23 22:16:32,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923240110] [2019-11-23 22:16:32,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:16:32,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:32,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:16:32,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:16:32,039 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 12 states. [2019-11-23 22:16:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:32,698 INFO L93 Difference]: Finished difference Result 209 states and 223 transitions. [2019-11-23 22:16:32,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-23 22:16:32,699 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2019-11-23 22:16:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:32,700 INFO L225 Difference]: With dead ends: 209 [2019-11-23 22:16:32,701 INFO L226 Difference]: Without dead ends: 207 [2019-11-23 22:16:32,701 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-23 22:16:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2019-11-23 22:16:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 136. [2019-11-23 22:16:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-23 22:16:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2019-11-23 22:16:32,727 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 55 [2019-11-23 22:16:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:32,728 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2019-11-23 22:16:32,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:16:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2019-11-23 22:16:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-23 22:16:32,729 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:32,729 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:32,933 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:32,933 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:32,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:32,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1505454979, now seen corresponding path program 6 times [2019-11-23 22:16:32,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:32,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450345461] [2019-11-23 22:16:32,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:32,942 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:32,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001802593] [2019-11-23 22:16:32,943 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/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 [2019-11-23 22:16:32,974 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-11-23 22:16:32,974 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:32,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-23 22:16:32,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:33,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:33,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2019-11-23 22:16:33,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450345461] [2019-11-23 22:16:33,065 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:33,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001802593] [2019-11-23 22:16:33,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:33,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:33,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398880228] [2019-11-23 22:16:33,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:33,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:33,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:33,067 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand 7 states. [2019-11-23 22:16:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:33,425 INFO L93 Difference]: Finished difference Result 235 states and 250 transitions. [2019-11-23 22:16:33,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:16:33,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-11-23 22:16:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:33,427 INFO L225 Difference]: With dead ends: 235 [2019-11-23 22:16:33,427 INFO L226 Difference]: Without dead ends: 233 [2019-11-23 22:16:33,428 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:16:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2019-11-23 22:16:33,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 136. [2019-11-23 22:16:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-23 22:16:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2019-11-23 22:16:33,451 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 64 [2019-11-23 22:16:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:33,451 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2019-11-23 22:16:33,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2019-11-23 22:16:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-23 22:16:33,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:33,452 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-23 22:16:33,654 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:33,654 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:33,655 INFO L82 PathProgramCache]: Analyzing trace with hash -702330076, now seen corresponding path program 7 times [2019-11-23 22:16:33,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:33,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910122116] [2019-11-23 22:16:33,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:33,662 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:33,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299798576] [2019-11-23 22:16:33,662 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/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 [2019-11-23 22:16:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:33,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 22:16:33,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 106 proven. 21 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-11-23 22:16:33,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910122116] [2019-11-23 22:16:33,850 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:33,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299798576] [2019-11-23 22:16:33,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:33,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:16:33,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976921985] [2019-11-23 22:16:33,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:33,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:33,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:33,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:33,851 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand 7 states. [2019-11-23 22:16:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:34,118 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2019-11-23 22:16:34,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:16:34,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2019-11-23 22:16:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:34,119 INFO L225 Difference]: With dead ends: 236 [2019-11-23 22:16:34,119 INFO L226 Difference]: Without dead ends: 136 [2019-11-23 22:16:34,120 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:16:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-23 22:16:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-11-23 22:16:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-23 22:16:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 142 transitions. [2019-11-23 22:16:34,141 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 142 transitions. Word has length 77 [2019-11-23 22:16:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:34,141 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 142 transitions. [2019-11-23 22:16:34,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 142 transitions. [2019-11-23 22:16:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-23 22:16:34,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:34,143 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-23 22:16:34,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:34,344 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1769749039, now seen corresponding path program 8 times [2019-11-23 22:16:34,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:34,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054565263] [2019-11-23 22:16:34,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:34,350 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:34,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566585097] [2019-11-23 22:16:34,350 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/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 [2019-11-23 22:16:34,401 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:16:34,401 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:34,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 22:16:34,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 137 proven. 76 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-23 22:16:34,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054565263] [2019-11-23 22:16:34,592 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:34,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566585097] [2019-11-23 22:16:34,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:34,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-23 22:16:34,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974614645] [2019-11-23 22:16:34,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 22:16:34,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:34,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 22:16:34,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:16:34,593 INFO L87 Difference]: Start difference. First operand 136 states and 142 transitions. Second operand 9 states. [2019-11-23 22:16:35,643 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-11-23 22:16:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:36,865 INFO L93 Difference]: Finished difference Result 245 states and 254 transitions. [2019-11-23 22:16:36,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:16:36,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2019-11-23 22:16:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:36,867 INFO L225 Difference]: With dead ends: 245 [2019-11-23 22:16:36,867 INFO L226 Difference]: Without dead ends: 105 [2019-11-23 22:16:36,868 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:16:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-23 22:16:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-11-23 22:16:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-23 22:16:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2019-11-23 22:16:36,885 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 86 [2019-11-23 22:16:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:36,885 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2019-11-23 22:16:36,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 22:16:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2019-11-23 22:16:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-23 22:16:36,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:36,886 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-23 22:16:37,089 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:37,090 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:37,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:37,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2111138255, now seen corresponding path program 9 times [2019-11-23 22:16:37,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:37,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629983032] [2019-11-23 22:16:37,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:37,096 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:37,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822656184] [2019-11-23 22:16:37,097 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/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 [2019-11-23 22:16:37,128 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-23 22:16:37,128 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:37,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-23 22:16:37,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:37,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:37,200 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2019-11-23 22:16:37,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629983032] [2019-11-23 22:16:37,225 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:37,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822656184] [2019-11-23 22:16:37,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:37,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:37,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288938579] [2019-11-23 22:16:37,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:37,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:37,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:37,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:37,227 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 7 states. [2019-11-23 22:16:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:37,336 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2019-11-23 22:16:37,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:16:37,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-11-23 22:16:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:37,337 INFO L225 Difference]: With dead ends: 105 [2019-11-23 22:16:37,337 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:16:37,337 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:16:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:16:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:16:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:16:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:16:37,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2019-11-23 22:16:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:37,338 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:16:37,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:16:37,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:16:37,538 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:37,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:16:37,912 WARN L192 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 189 [2019-11-23 22:16:38,335 WARN L192 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 182 [2019-11-23 22:16:38,562 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 178 [2019-11-23 22:16:38,867 WARN L192 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 182 [2019-11-23 22:16:39,177 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 180 [2019-11-23 22:16:46,443 WARN L192 SmtUtils]: Spent 7.26 s on a formula simplification. DAG size of input: 190 DAG size of output: 40 [2019-11-23 22:17:04,030 WARN L192 SmtUtils]: Spent 17.58 s on a formula simplification. DAG size of input: 124 DAG size of output: 38 [2019-11-23 22:17:20,107 WARN L192 SmtUtils]: Spent 16.07 s on a formula simplification. DAG size of input: 178 DAG size of output: 44 [2019-11-23 22:17:30,243 WARN L192 SmtUtils]: Spent 10.13 s on a formula simplification. DAG size of input: 179 DAG size of output: 46 [2019-11-23 22:17:38,219 WARN L192 SmtUtils]: Spent 7.97 s on a formula simplification. DAG size of input: 138 DAG size of output: 57 [2019-11-23 22:17:52,196 WARN L192 SmtUtils]: Spent 13.97 s on a formula simplification. DAG size of input: 181 DAG size of output: 44