java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-multidimensional/diff-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 21:48:04,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 21:48:04,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 21:48:04,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 21:48:04,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 21:48:04,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 21:48:04,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 21:48:04,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 21:48:04,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 21:48:04,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 21:48:04,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 21:48:04,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 21:48:04,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 21:48:04,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 21:48:04,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 21:48:04,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 21:48:04,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 21:48:04,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 21:48:04,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 21:48:04,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 21:48:04,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 21:48:04,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 21:48:04,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 21:48:04,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 21:48:04,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 21:48:04,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 21:48:04,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 21:48:04,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 21:48:04,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 21:48:04,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 21:48:04,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 21:48:04,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 21:48:04,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 21:48:04,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 21:48:04,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 21:48:04,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 21:48:04,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 21:48:04,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 21:48:04,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 21:48:04,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 21:48:04,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 21:48:04,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 21:48:04,513 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 21:48:04,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 21:48:04,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 21:48:04,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 21:48:04,515 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 21:48:04,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 21:48:04,515 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 21:48:04,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 21:48:04,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 21:48:04,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 21:48:04,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 21:48:04,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 21:48:04,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 21:48:04,517 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 21:48:04,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 21:48:04,517 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 21:48:04,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 21:48:04,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 21:48:04,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 21:48:04,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 21:48:04,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 21:48:04,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:48:04,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 21:48:04,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 21:48:04,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 21:48:04,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 21:48:04,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 21:48:04,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 21:48:04,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 21:48:04,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 21:48:04,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 21:48:04,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 21:48:04,860 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 21:48:04,861 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 21:48:04,861 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/diff-2-n-u.c [2019-10-14 21:48:04,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84240a631/d7c2c386964d48579b5e9b0e6769456f/FLAG45c952ec0 [2019-10-14 21:48:05,365 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 21:48:05,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/diff-2-n-u.c [2019-10-14 21:48:05,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84240a631/d7c2c386964d48579b5e9b0e6769456f/FLAG45c952ec0 [2019-10-14 21:48:05,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84240a631/d7c2c386964d48579b5e9b0e6769456f [2019-10-14 21:48:05,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 21:48:05,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 21:48:05,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 21:48:05,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 21:48:05,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 21:48:05,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:48:05" (1/1) ... [2019-10-14 21:48:05,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338e2a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:05, skipping insertion in model container [2019-10-14 21:48:05,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:48:05" (1/1) ... [2019-10-14 21:48:05,790 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 21:48:05,813 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 21:48:05,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:48:05,992 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 21:48:06,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:48:06,138 INFO L192 MainTranslator]: Completed translation [2019-10-14 21:48:06,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06 WrapperNode [2019-10-14 21:48:06,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 21:48:06,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 21:48:06,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 21:48:06,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 21:48:06,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (1/1) ... [2019-10-14 21:48:06,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (1/1) ... [2019-10-14 21:48:06,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (1/1) ... [2019-10-14 21:48:06,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (1/1) ... [2019-10-14 21:48:06,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (1/1) ... [2019-10-14 21:48:06,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (1/1) ... [2019-10-14 21:48:06,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (1/1) ... [2019-10-14 21:48:06,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 21:48:06,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 21:48:06,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 21:48:06,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 21:48:06,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (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 [2019-10-14 21:48:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 21:48:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 21:48:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 21:48:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 21:48:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 21:48:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 21:48:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-14 21:48:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 21:48:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 21:48:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 21:48:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 21:48:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 21:48:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 21:48:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 21:48:06,563 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 21:48:06,563 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-14 21:48:06,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:48:06 BoogieIcfgContainer [2019-10-14 21:48:06,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 21:48:06,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 21:48:06,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 21:48:06,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 21:48:06,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:48:05" (1/3) ... [2019-10-14 21:48:06,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be03787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:48:06, skipping insertion in model container [2019-10-14 21:48:06,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:48:06" (2/3) ... [2019-10-14 21:48:06,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be03787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:48:06, skipping insertion in model container [2019-10-14 21:48:06,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:48:06" (3/3) ... [2019-10-14 21:48:06,573 INFO L109 eAbstractionObserver]: Analyzing ICFG diff-2-n-u.c [2019-10-14 21:48:06,590 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 21:48:06,604 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 21:48:06,622 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 21:48:06,651 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 21:48:06,657 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 21:48:06,658 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 21:48:06,658 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 21:48:06,658 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 21:48:06,658 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 21:48:06,658 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 21:48:06,658 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 21:48:06,681 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-14 21:48:06,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 21:48:06,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:48:06,696 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:48:06,698 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:48:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:48:06,703 INFO L82 PathProgramCache]: Analyzing trace with hash 94592989, now seen corresponding path program 1 times [2019-10-14 21:48:06,710 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:48:06,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533449147] [2019-10-14 21:48:06,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:06,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:06,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:48:06,792 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 21:48:06,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3728712] [2019-10-14 21:48:06,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:48:06,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 21:48:06,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:48:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:48:06,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533449147] [2019-10-14 21:48:06,932 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 21:48:06,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3728712] [2019-10-14 21:48:06,933 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:48:06,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 21:48:06,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173619239] [2019-10-14 21:48:06,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:48:06,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:48:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:48:06,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 21:48:06,957 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2019-10-14 21:48:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:48:07,042 INFO L93 Difference]: Finished difference Result 65 states and 102 transitions. [2019-10-14 21:48:07,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:48:07,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-14 21:48:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:48:07,052 INFO L225 Difference]: With dead ends: 65 [2019-10-14 21:48:07,053 INFO L226 Difference]: Without dead ends: 32 [2019-10-14 21:48:07,056 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 21:48:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-14 21:48:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-10-14 21:48:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-14 21:48:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-10-14 21:48:07,103 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 18 [2019-10-14 21:48:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:48:07,103 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-10-14 21:48:07,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:48:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-10-14 21:48:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 21:48:07,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:48:07,105 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:48:07,315 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:07,316 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:48:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:48:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1982042687, now seen corresponding path program 1 times [2019-10-14 21:48:07,317 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:48:07,317 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937375854] [2019-10-14 21:48:07,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:07,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:07,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:48:07,331 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 21:48:07,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704871865] [2019-10-14 21:48:07,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:48:07,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 21:48:07,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:48:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:48:07,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937375854] [2019-10-14 21:48:07,410 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 21:48:07,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704871865] [2019-10-14 21:48:07,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:48:07,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:48:07,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558830968] [2019-10-14 21:48:07,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 21:48:07,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:48:07,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 21:48:07,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 21:48:07,413 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-10-14 21:48:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:48:07,525 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2019-10-14 21:48:07,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 21:48:07,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-14 21:48:07,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:48:07,530 INFO L225 Difference]: With dead ends: 64 [2019-10-14 21:48:07,530 INFO L226 Difference]: Without dead ends: 41 [2019-10-14 21:48:07,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 21:48:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-14 21:48:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2019-10-14 21:48:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-14 21:48:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-10-14 21:48:07,560 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 21 [2019-10-14 21:48:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:48:07,561 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-10-14 21:48:07,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 21:48:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-10-14 21:48:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-14 21:48:07,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:48:07,567 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:48:07,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:07,780 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:48:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:48:07,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1652526196, now seen corresponding path program 1 times [2019-10-14 21:48:07,782 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:48:07,782 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556696188] [2019-10-14 21:48:07,783 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:07,783 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:07,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:48:07,793 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 21:48:07,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695366975] [2019-10-14 21:48:07,794 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:48:07,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:48:07,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:48:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:48:07,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556696188] [2019-10-14 21:48:07,894 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 21:48:07,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695366975] [2019-10-14 21:48:07,895 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:48:07,895 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-14 21:48:07,895 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16961176] [2019-10-14 21:48:07,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:48:07,896 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:48:07,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:48:07,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:48:07,897 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 5 states. [2019-10-14 21:48:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:48:08,037 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2019-10-14 21:48:08,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 21:48:08,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-14 21:48:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:48:08,039 INFO L225 Difference]: With dead ends: 74 [2019-10-14 21:48:08,039 INFO L226 Difference]: Without dead ends: 47 [2019-10-14 21:48:08,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:48:08,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-14 21:48:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2019-10-14 21:48:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-14 21:48:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-10-14 21:48:08,049 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2019-10-14 21:48:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:48:08,050 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-10-14 21:48:08,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:48:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-10-14 21:48:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-14 21:48:08,051 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:48:08,051 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:48:08,254 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:08,255 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:48:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:48:08,255 INFO L82 PathProgramCache]: Analyzing trace with hash -27449567, now seen corresponding path program 2 times [2019-10-14 21:48:08,256 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:48:08,256 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250839122] [2019-10-14 21:48:08,257 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:08,257 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:08,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:48:08,275 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 21:48:08,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082143213] [2019-10-14 21:48:08,275 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 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 [2019-10-14 21:48:08,315 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-14 21:48:08,315 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:48:08,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 21:48:08,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:48:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 21:48:08,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250839122] [2019-10-14 21:48:08,343 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 21:48:08,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082143213] [2019-10-14 21:48:08,344 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:48:08,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:48:08,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271541222] [2019-10-14 21:48:08,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 21:48:08,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:48:08,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 21:48:08,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 21:48:08,346 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2019-10-14 21:48:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:48:08,415 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2019-10-14 21:48:08,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 21:48:08,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-10-14 21:48:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:48:08,418 INFO L225 Difference]: With dead ends: 85 [2019-10-14 21:48:08,418 INFO L226 Difference]: Without dead ends: 63 [2019-10-14 21:48:08,418 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 21:48:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-14 21:48:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 42. [2019-10-14 21:48:08,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 21:48:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2019-10-14 21:48:08,429 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 23 [2019-10-14 21:48:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:48:08,429 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2019-10-14 21:48:08,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 21:48:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2019-10-14 21:48:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-14 21:48:08,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:48:08,431 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:48:08,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:08,641 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:48:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:48:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash 24575093, now seen corresponding path program 1 times [2019-10-14 21:48:08,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:48:08,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563212857] [2019-10-14 21:48:08,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:08,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:08,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:48:08,651 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 21:48:08,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761584017] [2019-10-14 21:48:08,652 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 [2019-10-14 21:48:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:48:08,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 21:48:08,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:48:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 21:48:08,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563212857] [2019-10-14 21:48:08,755 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 21:48:08,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761584017] [2019-10-14 21:48:08,755 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:48:08,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-10-14 21:48:08,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384987141] [2019-10-14 21:48:08,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 21:48:08,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:48:08,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 21:48:08,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-14 21:48:08,761 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 6 states. [2019-10-14 21:48:08,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:48:08,870 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2019-10-14 21:48:08,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 21:48:08,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-10-14 21:48:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:48:08,873 INFO L225 Difference]: With dead ends: 86 [2019-10-14 21:48:08,873 INFO L226 Difference]: Without dead ends: 51 [2019-10-14 21:48:08,873 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-14 21:48:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-14 21:48:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-10-14 21:48:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-14 21:48:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2019-10-14 21:48:08,894 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 33 [2019-10-14 21:48:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:48:08,894 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2019-10-14 21:48:08,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 21:48:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2019-10-14 21:48:08,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-14 21:48:08,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:48:08,901 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:48:09,102 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:09,103 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:48:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:48:09,104 INFO L82 PathProgramCache]: Analyzing trace with hash 2136339146, now seen corresponding path program 2 times [2019-10-14 21:48:09,104 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:48:09,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494492453] [2019-10-14 21:48:09,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:09,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:09,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:48:09,113 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 21:48:09,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315299930] [2019-10-14 21:48:09,113 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 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 [2019-10-14 21:48:09,193 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 21:48:09,193 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:48:09,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 21:48:09,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:48:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 21:48:09,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494492453] [2019-10-14 21:48:09,255 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 21:48:09,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315299930] [2019-10-14 21:48:09,256 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:48:09,256 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-10-14 21:48:09,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353917710] [2019-10-14 21:48:09,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 21:48:09,257 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:48:09,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 21:48:09,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:48:09,257 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 7 states. [2019-10-14 21:48:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:48:09,375 INFO L93 Difference]: Finished difference Result 98 states and 122 transitions. [2019-10-14 21:48:09,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 21:48:09,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-10-14 21:48:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:48:09,377 INFO L225 Difference]: With dead ends: 98 [2019-10-14 21:48:09,377 INFO L226 Difference]: Without dead ends: 57 [2019-10-14 21:48:09,378 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:48:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-14 21:48:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-10-14 21:48:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-14 21:48:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-10-14 21:48:09,395 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 36 [2019-10-14 21:48:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:48:09,396 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-10-14 21:48:09,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 21:48:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-10-14 21:48:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 21:48:09,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:48:09,397 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:48:09,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:09,598 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:48:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:48:09,599 INFO L82 PathProgramCache]: Analyzing trace with hash 6847317, now seen corresponding path program 3 times [2019-10-14 21:48:09,599 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:48:09,600 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593018729] [2019-10-14 21:48:09,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:09,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:09,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:48:09,609 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 21:48:09,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884102538] [2019-10-14 21:48:09,610 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 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 [2019-10-14 21:48:09,655 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-14 21:48:09,656 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 21:48:09,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:48:09,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:48:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 21:48:09,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593018729] [2019-10-14 21:48:09,695 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 21:48:09,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884102538] [2019-10-14 21:48:09,696 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:48:09,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-14 21:48:09,696 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405504316] [2019-10-14 21:48:09,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:48:09,697 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:48:09,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:48:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:48:09,698 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 5 states. [2019-10-14 21:48:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:48:09,815 INFO L93 Difference]: Finished difference Result 163 states and 200 transitions. [2019-10-14 21:48:09,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 21:48:09,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-10-14 21:48:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:48:09,817 INFO L225 Difference]: With dead ends: 163 [2019-10-14 21:48:09,817 INFO L226 Difference]: Without dead ends: 123 [2019-10-14 21:48:09,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:48:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-14 21:48:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 75. [2019-10-14 21:48:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-14 21:48:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2019-10-14 21:48:09,832 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 39 [2019-10-14 21:48:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:48:09,833 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2019-10-14 21:48:09,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:48:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2019-10-14 21:48:09,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-14 21:48:09,834 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:48:09,835 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:48:10,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:48:10,038 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:48:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:48:10,039 INFO L82 PathProgramCache]: Analyzing trace with hash -763208995, now seen corresponding path program 4 times [2019-10-14 21:48:10,040 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:48:10,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141494762] [2019-10-14 21:48:10,040 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:10,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:48:10,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:48:10,050 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 21:48:10,050 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776004510] [2019-10-14 21:48:10,050 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 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