/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:00:12,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:00:12,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:00:12,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:00:12,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:00:12,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:00:12,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:00:12,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:00:12,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:00:12,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:00:12,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:00:12,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:00:12,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:00:12,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:00:12,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:00:12,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:00:12,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:00:12,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:00:12,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:00:12,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:00:12,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:00:12,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:00:12,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:00:12,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:00:12,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:00:12,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:00:12,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:00:12,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:00:12,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:00:12,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:00:12,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:00:12,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:00:12,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:00:12,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:00:12,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:00:12,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:00:12,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:00:12,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:00:12,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:00:12,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:00:12,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:00:12,527 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:00:12,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:00:12,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:00:12,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:00:12,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:00:12,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:00:12,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:00:12,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:00:12,529 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:00:12,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:00:12,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:00:12,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:00:12,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:00:12,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:00:12,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:00:12,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:00:12,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:00:12,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:00:12,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:00:12,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:00:12,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:00:12,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:00:12,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:00:12,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:00:12,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:00:12,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:00:12,925 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:00:12,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2020-12-22 05:00:13,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2da4b81c/cf4d894c0aab4a279aba4954f9be09f2/FLAGce488d902 [2020-12-22 05:00:13,534 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:00:13,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2020-12-22 05:00:13,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2da4b81c/cf4d894c0aab4a279aba4954f9be09f2/FLAGce488d902 [2020-12-22 05:00:13,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2da4b81c/cf4d894c0aab4a279aba4954f9be09f2 [2020-12-22 05:00:13,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:00:13,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:00:13,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:00:13,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:00:13,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:00:13,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:00:13" (1/1) ... [2020-12-22 05:00:13,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c488065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:13, skipping insertion in model container [2020-12-22 05:00:13,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:00:13" (1/1) ... [2020-12-22 05:00:13,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:00:13,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:00:14,100 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601] [2020-12-22 05:00:14,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:00:14,160 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:00:14,182 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601] [2020-12-22 05:00:14,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:00:14,238 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:00:14,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14 WrapperNode [2020-12-22 05:00:14,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:00:14,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:00:14,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:00:14,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:00:14,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:00:14,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:00:14,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:00:14,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:00:14,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (1/1) ... [2020-12-22 05:00:14,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:00:14,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:00:14,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:00:14,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:00:14,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (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 [2020-12-22 05:00:14,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:00:14,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:00:14,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:00:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:00:14,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:00:14,975 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-22 05:00:14,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:00:14 BoogieIcfgContainer [2020-12-22 05:00:14,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:00:14,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:00:14,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:00:14,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:00:14,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:00:13" (1/3) ... [2020-12-22 05:00:14,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b86d888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:00:14, skipping insertion in model container [2020-12-22 05:00:14,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:00:14" (2/3) ... [2020-12-22 05:00:14,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b86d888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:00:14, skipping insertion in model container [2020-12-22 05:00:14,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:00:14" (3/3) ... [2020-12-22 05:00:14,987 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound20.c [2020-12-22 05:00:14,994 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:00:14,998 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 05:00:15,019 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 05:00:15,049 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:00:15,049 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:00:15,049 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:00:15,049 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:00:15,049 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:00:15,050 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:00:15,050 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:00:15,050 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:00:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-22 05:00:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:00:15,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:15,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:15,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-22 05:00:15,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:15,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063680479] [2020-12-22 05:00:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:15,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063680479] [2020-12-22 05:00:15,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:00:15,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:00:15,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015860039] [2020-12-22 05:00:15,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:00:15,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:15,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:00:15,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:00:15,285 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-22 05:00:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:15,309 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2020-12-22 05:00:15,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:00:15,311 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 05:00:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:15,321 INFO L225 Difference]: With dead ends: 103 [2020-12-22 05:00:15,321 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 05:00:15,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:00:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 05:00:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-22 05:00:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:00:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-12-22 05:00:15,368 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2020-12-22 05:00:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:15,368 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-12-22 05:00:15,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:00:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-12-22 05:00:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:00:15,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:15,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:15,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:00:15,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:15,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:15,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-22 05:00:15,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:15,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703110307] [2020-12-22 05:00:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:15,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703110307] [2020-12-22 05:00:15,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:00:15,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:00:15,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975915531] [2020-12-22 05:00:15,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:00:15,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:15,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:00:15,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:00:15,540 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 4 states. [2020-12-22 05:00:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:15,670 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-22 05:00:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:00:15,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 05:00:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:15,672 INFO L225 Difference]: With dead ends: 50 [2020-12-22 05:00:15,672 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 05:00:15,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:00:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 05:00:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-12-22 05:00:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 05:00:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-12-22 05:00:15,683 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2020-12-22 05:00:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:15,684 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-12-22 05:00:15,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:00:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-12-22 05:00:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:00:15,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:15,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:15,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:00:15,685 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:15,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-22 05:00:15,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:15,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889580095] [2020-12-22 05:00:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:15,722 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:15,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608564927] [2020-12-22 05:00:15,722 INFO L95 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 [2020-12-22 05:00:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:15,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:00:15,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:15,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889580095] [2020-12-22 05:00:15,891 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:15,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608564927] [2020-12-22 05:00:15,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:00:15,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:00:15,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759651525] [2020-12-22 05:00:15,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:00:15,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:15,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:00:15,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:00:15,895 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 6 states. [2020-12-22 05:00:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:16,096 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-12-22 05:00:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:00:16,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-22 05:00:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:16,098 INFO L225 Difference]: With dead ends: 87 [2020-12-22 05:00:16,098 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 05:00:16,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:00:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 05:00:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-12-22 05:00:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:00:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-12-22 05:00:16,114 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 9 [2020-12-22 05:00:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:16,114 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-12-22 05:00:16,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:00:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-12-22 05:00:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:00:16,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:16,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:16,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 05:00:16,329 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:16,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-22 05:00:16,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:16,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236613072] [2020-12-22 05:00:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:16,348 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:16,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114021651] [2020-12-22 05:00:16,349 INFO L95 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 [2020-12-22 05:00:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:16,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:00:16,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:16,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236613072] [2020-12-22 05:00:16,490 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:16,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114021651] [2020-12-22 05:00:16,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:00:16,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:00:16,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847139311] [2020-12-22 05:00:16,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:00:16,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:16,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:00:16,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:00:16,498 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 6 states. [2020-12-22 05:00:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:16,652 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-12-22 05:00:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:00:16,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 05:00:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:16,654 INFO L225 Difference]: With dead ends: 78 [2020-12-22 05:00:16,654 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 05:00:16,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:00:16,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 05:00:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-22 05:00:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:00:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-22 05:00:16,666 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 11 [2020-12-22 05:00:16,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:16,667 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-22 05:00:16,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:00:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-22 05:00:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:00:16,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:16,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:16,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:00:16,884 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:16,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:16,885 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2020-12-22 05:00:16,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:16,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762729080] [2020-12-22 05:00:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:16,902 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:16,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982026768] [2020-12-22 05:00:16,902 INFO L95 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 [2020-12-22 05:00:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:16,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:00:16,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:17,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762729080] [2020-12-22 05:00:17,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:17,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982026768] [2020-12-22 05:00:17,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:00:17,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:00:17,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743889226] [2020-12-22 05:00:17,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:00:17,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:17,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:00:17,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:00:17,029 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2020-12-22 05:00:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:17,239 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-12-22 05:00:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:00:17,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 05:00:17,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:17,240 INFO L225 Difference]: With dead ends: 75 [2020-12-22 05:00:17,241 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 05:00:17,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:00:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 05:00:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-22 05:00:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 05:00:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-12-22 05:00:17,249 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2020-12-22 05:00:17,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:17,250 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-12-22 05:00:17,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:00:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-12-22 05:00:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:00:17,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:17,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:17,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:00:17,465 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:17,466 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2020-12-22 05:00:17,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:17,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850730169] [2020-12-22 05:00:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:17,490 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:17,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988843390] [2020-12-22 05:00:17,490 INFO L95 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 [2020-12-22 05:00:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:17,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:00:17,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:17,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850730169] [2020-12-22 05:00:17,649 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:17,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988843390] [2020-12-22 05:00:17,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:00:17,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:00:17,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738819631] [2020-12-22 05:00:17,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:00:17,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:17,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:00:17,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:00:17,655 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 7 states. [2020-12-22 05:00:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:17,895 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-12-22 05:00:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:00:17,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 05:00:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:17,897 INFO L225 Difference]: With dead ends: 98 [2020-12-22 05:00:17,897 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 05:00:17,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:00:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 05:00:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-12-22 05:00:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 05:00:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-12-22 05:00:17,909 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 20 [2020-12-22 05:00:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:17,909 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-12-22 05:00:17,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:00:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-12-22 05:00:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:00:17,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:17,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:18,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:00:18,125 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2020-12-22 05:00:18,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:18,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23506166] [2020-12-22 05:00:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:18,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:18,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46323005] [2020-12-22 05:00:18,152 INFO L95 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 [2020-12-22 05:00:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:18,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:00:18,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:18,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23506166] [2020-12-22 05:00:18,312 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:18,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46323005] [2020-12-22 05:00:18,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:00:18,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:00:18,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933658558] [2020-12-22 05:00:18,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:00:18,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:18,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:00:18,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:00:18,315 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2020-12-22 05:00:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:18,507 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-12-22 05:00:18,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:00:18,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-22 05:00:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:18,508 INFO L225 Difference]: With dead ends: 91 [2020-12-22 05:00:18,509 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 05:00:18,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:00:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 05:00:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-12-22 05:00:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 05:00:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-12-22 05:00:18,518 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 22 [2020-12-22 05:00:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:18,518 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-12-22 05:00:18,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:00:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-12-22 05:00:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:00:18,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:18,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:18,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:00:18,735 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:18,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2020-12-22 05:00:18,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:18,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17403622] [2020-12-22 05:00:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:18,750 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:18,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418062918] [2020-12-22 05:00:18,751 INFO L95 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 [2020-12-22 05:00:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:18,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 05:00:18,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:18,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:00:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:19,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17403622] [2020-12-22 05:00:19,006 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:19,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418062918] [2020-12-22 05:00:19,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:00:19,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:00:19,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334441823] [2020-12-22 05:00:19,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:00:19,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:19,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:00:19,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:00:19,008 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 8 states. [2020-12-22 05:00:19,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:19,481 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-12-22 05:00:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:00:19,486 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:00:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:19,487 INFO L225 Difference]: With dead ends: 81 [2020-12-22 05:00:19,487 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 05:00:19,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:00:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 05:00:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-12-22 05:00:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 05:00:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-12-22 05:00:19,503 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2020-12-22 05:00:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:19,507 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-12-22 05:00:19,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:00:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-12-22 05:00:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:00:19,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:19,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:19,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:00:19,725 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:19,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2020-12-22 05:00:19,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:19,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820655231] [2020-12-22 05:00:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:19,739 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:19,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119812940] [2020-12-22 05:00:19,740 INFO L93 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 [2020-12-22 05:00:19,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:00:19,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:00:19,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:00:19,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:19,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820655231] [2020-12-22 05:00:19,970 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:19,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119812940] [2020-12-22 05:00:19,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:00:19,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:00:19,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639366740] [2020-12-22 05:00:19,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:00:19,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:19,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:00:19,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:00:19,972 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 8 states. [2020-12-22 05:00:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:20,253 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-12-22 05:00:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:00:20,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:00:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:20,255 INFO L225 Difference]: With dead ends: 121 [2020-12-22 05:00:20,255 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 05:00:20,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:00:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 05:00:20,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-12-22 05:00:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 05:00:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-12-22 05:00:20,268 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 31 [2020-12-22 05:00:20,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:20,268 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-12-22 05:00:20,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:00:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-12-22 05:00:20,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:00:20,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:20,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:20,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:00:20,483 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:20,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:20,484 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2020-12-22 05:00:20,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:20,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458836646] [2020-12-22 05:00:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:20,496 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:20,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546321277] [2020-12-22 05:00:20,497 INFO L95 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 [2020-12-22 05:00:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:00:20,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:00:20,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:20,714 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:00:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:20,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458836646] [2020-12-22 05:00:20,737 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:20,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546321277] [2020-12-22 05:00:20,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:00:20,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:00:20,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654557476] [2020-12-22 05:00:20,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:00:20,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:20,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:00:20,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:00:20,739 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2020-12-22 05:00:21,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:21,162 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2020-12-22 05:00:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:00:21,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 05:00:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:21,163 INFO L225 Difference]: With dead ends: 100 [2020-12-22 05:00:21,163 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 05:00:21,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:00:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 05:00:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-22 05:00:21,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 05:00:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-12-22 05:00:21,189 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-12-22 05:00:21,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:21,189 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-12-22 05:00:21,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:00:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-12-22 05:00:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:00:21,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:21,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:21,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:00:21,407 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:21,408 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2020-12-22 05:00:21,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:21,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261072588] [2020-12-22 05:00:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:21,421 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:21,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758720323] [2020-12-22 05:00:21,423 INFO L93 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 [2020-12-22 05:00:21,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:00:21,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:00:21,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 05:00:21,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:21,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261072588] [2020-12-22 05:00:21,682 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:21,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758720323] [2020-12-22 05:00:21,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:00:21,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:00:21,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656763334] [2020-12-22 05:00:21,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:00:21,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:21,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:00:21,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:00:21,685 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 10 states. [2020-12-22 05:00:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:21,990 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-12-22 05:00:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:00:21,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-22 05:00:21,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:21,992 INFO L225 Difference]: With dead ends: 111 [2020-12-22 05:00:21,992 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 05:00:21,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:00:21,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 05:00:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2020-12-22 05:00:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 05:00:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-12-22 05:00:22,001 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 33 [2020-12-22 05:00:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:22,002 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-12-22 05:00:22,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:00:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-12-22 05:00:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 05:00:22,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:22,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:22,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:00:22,218 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:22,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2020-12-22 05:00:22,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:22,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424986103] [2020-12-22 05:00:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:22,230 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:22,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685558078] [2020-12-22 05:00:22,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-12-22 05:00:22,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:00:22,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:00:22,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:00:22,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:22,464 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:00:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:00:22,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424986103] [2020-12-22 05:00:22,484 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:22,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685558078] [2020-12-22 05:00:22,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:00:22,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:00:22,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978334287] [2020-12-22 05:00:22,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:00:22,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:22,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:00:22,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:00:22,486 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 8 states. [2020-12-22 05:00:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:22,757 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-12-22 05:00:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:00:22,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-22 05:00:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:22,758 INFO L225 Difference]: With dead ends: 88 [2020-12-22 05:00:22,758 INFO L226 Difference]: Without dead ends: 86 [2020-12-22 05:00:22,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:00:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-22 05:00:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-12-22 05:00:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 05:00:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-12-22 05:00:22,767 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 42 [2020-12-22 05:00:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:22,767 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-12-22 05:00:22,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:00:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-12-22 05:00:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 05:00:22,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:22,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:22,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:00:22,983 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:22,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:22,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2020-12-22 05:00:22,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:22,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521763532] [2020-12-22 05:00:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:22,995 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:22,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137257335] [2020-12-22 05:00:22,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-12-22 05:00:23,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:00:23,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:00:23,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:00:23,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:23,186 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:00:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-22 05:00:23,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521763532] [2020-12-22 05:00:23,404 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:00:23,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137257335] [2020-12-22 05:00:23,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:00:23,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:00:23,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935012019] [2020-12-22 05:00:23,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:00:23,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:00:23,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:00:23,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:00:23,406 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 8 states. [2020-12-22 05:00:35,885 WARN L197 SmtUtils]: Spent 12.05 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 05:00:49,337 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 36 [2020-12-22 05:01:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:15,552 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-12-22 05:01:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:01:15,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-22 05:01:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:15,572 INFO L225 Difference]: With dead ends: 84 [2020-12-22 05:01:15,572 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 05:01:15,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:01:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 05:01:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-22 05:01:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 05:01:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-12-22 05:01:15,586 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 42 [2020-12-22 05:01:15,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:15,586 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-12-22 05:01:15,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:01:15,586 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-12-22 05:01:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:01:15,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:15,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:15,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:01:15,792 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:15,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1899544187, now seen corresponding path program 2 times [2020-12-22 05:01:15,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:15,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068856828] [2020-12-22 05:01:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:15,804 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:15,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854563992] [2020-12-22 05:01:15,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-12-22 05:01:16,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:01:16,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:01:16,733 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-22 05:01:16,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:16,879 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-22 05:03:13,437 WARN L197 SmtUtils]: Spent 1.78 m on a formula simplification that was a NOOP. DAG size: 40 [2020-12-22 05:03:23,646 WARN L197 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 05:04:40,333 WARN L197 SmtUtils]: Spent 45.85 s on a formula simplification that was a NOOP. DAG size: 45