/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/gcd_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:58:19,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:58:19,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:58:19,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:58:19,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:58:19,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:58:19,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:58:19,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:58:19,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:58:19,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:58:19,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:58:19,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:58:19,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:58:19,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:58:19,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:58:19,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:58:19,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:58:19,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:58:19,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:58:19,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:58:19,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:58:19,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:58:19,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:58:19,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:58:19,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:58:19,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:58:19,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:58:19,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:58:19,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:58:19,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:58:19,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:58:19,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:58:19,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:58:19,383 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:58:19,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:58:19,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:58:19,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:58:19,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:58:19,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:58:19,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:58:19,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:58:19,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:58:19,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:58:19,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:58:19,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:58:19,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:58:19,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:58:19,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:58:19,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:58:19,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:58:19,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:58:19,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:58:19,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:58:19,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:58:19,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:58:19,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:58:19,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:58:19,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:58:19,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:58:19,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:58:19,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:58:19,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:58:19,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:58:19,841 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:58:19,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/gcd_4.c [2020-11-06 21:58:19,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c223f5d4c/88f4b0aa98d64624a5dd44997eca610d/FLAG56d741ad5 [2020-11-06 21:58:20,495 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:58:20,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/gcd_4.c [2020-11-06 21:58:20,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c223f5d4c/88f4b0aa98d64624a5dd44997eca610d/FLAG56d741ad5 [2020-11-06 21:58:20,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c223f5d4c/88f4b0aa98d64624a5dd44997eca610d [2020-11-06 21:58:20,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:58:20,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:58:20,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:20,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:58:20,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:58:20,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:20" (1/1) ... [2020-11-06 21:58:20,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3740af4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:20, skipping insertion in model container [2020-11-06 21:58:20,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:20" (1/1) ... [2020-11-06 21:58:20,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:58:20,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:58:21,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:21,177 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:58:21,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:21,236 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:58:21,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21 WrapperNode [2020-11-06 21:58:21,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:21,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:58:21,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:58:21,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:58:21,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (1/1) ... [2020-11-06 21:58:21,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (1/1) ... [2020-11-06 21:58:21,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (1/1) ... [2020-11-06 21:58:21,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (1/1) ... [2020-11-06 21:58:21,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (1/1) ... [2020-11-06 21:58:21,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (1/1) ... [2020-11-06 21:58:21,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (1/1) ... [2020-11-06 21:58:21,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:58:21,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:58:21,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:58:21,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:58:21,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (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 [2020-11-06 21:58:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:58:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:58:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:58:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 21:58:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2020-11-06 21:58:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:58:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:58:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:58:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:58:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:58:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 21:58:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 21:58:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2020-11-06 21:58:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:58:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:58:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:58:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:58:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:58:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:58:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:58:21,820 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:58:21,821 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 21:58:21,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:21 BoogieIcfgContainer [2020-11-06 21:58:21,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:58:21,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:58:21,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:58:21,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:58:21,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:20" (1/3) ... [2020-11-06 21:58:21,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ff0985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:21, skipping insertion in model container [2020-11-06 21:58:21,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:21" (2/3) ... [2020-11-06 21:58:21,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ff0985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:21, skipping insertion in model container [2020-11-06 21:58:21,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:21" (3/3) ... [2020-11-06 21:58:21,837 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2020-11-06 21:58:21,854 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:58:21,857 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:58:21,871 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:58:21,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:58:21,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:58:21,934 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:58:21,934 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:58:21,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:58:21,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:58:21,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:58:21,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:58:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-06 21:58:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 21:58:21,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:21,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:21,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1323676825, now seen corresponding path program 1 times [2020-11-06 21:58:21,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:21,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568320552] [2020-11-06 21:58:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:22,094 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:22,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984349776] [2020-11-06 21:58:22,095 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 [2020-11-06 21:58:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:22,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 21:58:22,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:22,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568320552] [2020-11-06 21:58:22,346 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:22,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984349776] [2020-11-06 21:58:22,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:58:22,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 21:58:22,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99006653] [2020-11-06 21:58:22,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 21:58:22,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:22,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 21:58:22,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:58:22,370 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-11-06 21:58:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:22,470 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2020-11-06 21:58:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 21:58:22,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-06 21:58:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:22,482 INFO L225 Difference]: With dead ends: 65 [2020-11-06 21:58:22,482 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 21:58:22,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 21:58:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 21:58:22,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-06 21:58:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-06 21:58:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-11-06 21:58:22,525 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 19 [2020-11-06 21:58:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:22,526 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-11-06 21:58:22,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 21:58:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-11-06 21:58:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 21:58:22,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:22,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:22,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-06 21:58:22,741 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:22,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:22,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1716703835, now seen corresponding path program 1 times [2020-11-06 21:58:22,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:22,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882541522] [2020-11-06 21:58:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:22,781 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:22,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512554257] [2020-11-06 21:58:22,781 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 [2020-11-06 21:58:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:22,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 21:58:22,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:22,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882541522] [2020-11-06 21:58:22,927 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:22,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512554257] [2020-11-06 21:58:22,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:58:22,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 21:58:22,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066898284] [2020-11-06 21:58:22,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 21:58:22,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:22,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 21:58:22,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:58:22,937 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states. [2020-11-06 21:58:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:23,015 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-11-06 21:58:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 21:58:23,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-06 21:58:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:23,017 INFO L225 Difference]: With dead ends: 50 [2020-11-06 21:58:23,018 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 21:58:23,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 21:58:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 21:58:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-06 21:58:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-06 21:58:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-06 21:58:23,027 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2020-11-06 21:58:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:23,028 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-06 21:58:23,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 21:58:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-06 21:58:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 21:58:23,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:23,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:23,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:23,244 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:23,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1756824846, now seen corresponding path program 1 times [2020-11-06 21:58:23,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:23,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854183200] [2020-11-06 21:58:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:23,271 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:23,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615285429] [2020-11-06 21:58:23,272 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 [2020-11-06 21:58:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:23,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 21:58:23,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:23,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854183200] [2020-11-06 21:58:23,393 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:23,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615285429] [2020-11-06 21:58:23,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:58:23,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 21:58:23,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616704814] [2020-11-06 21:58:23,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 21:58:23,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:23,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 21:58:23,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:58:23,396 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-11-06 21:58:23,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:23,435 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-11-06 21:58:23,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 21:58:23,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-06 21:58:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:23,437 INFO L225 Difference]: With dead ends: 43 [2020-11-06 21:58:23,437 INFO L226 Difference]: Without dead ends: 29 [2020-11-06 21:58:23,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 21:58:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-06 21:58:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-06 21:58:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 21:58:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-11-06 21:58:23,445 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2020-11-06 21:58:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:23,446 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-11-06 21:58:23,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 21:58:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-11-06 21:58:23,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 21:58:23,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:23,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:23,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:23,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash 791528247, now seen corresponding path program 1 times [2020-11-06 21:58:23,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:23,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927165166] [2020-11-06 21:58:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:23,683 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:23,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279456932] [2020-11-06 21:58:23,684 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 [2020-11-06 21:58:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:23,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 21:58:23,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:23,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927165166] [2020-11-06 21:58:23,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:23,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279456932] [2020-11-06 21:58:23,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:23,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-06 21:58:23,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471322561] [2020-11-06 21:58:23,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 21:58:23,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:23,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 21:58:23,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 21:58:23,865 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-11-06 21:58:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:23,935 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-11-06 21:58:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 21:58:23,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-06 21:58:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:23,937 INFO L225 Difference]: With dead ends: 49 [2020-11-06 21:58:23,937 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 21:58:23,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 21:58:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 21:58:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-06 21:58:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 21:58:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-11-06 21:58:23,945 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 23 [2020-11-06 21:58:23,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:23,946 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-11-06 21:58:23,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 21:58:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-11-06 21:58:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 21:58:23,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:23,947 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:24,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:24,161 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:24,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2080669382, now seen corresponding path program 1 times [2020-11-06 21:58:24,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:24,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395935158] [2020-11-06 21:58:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:24,192 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:24,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301970241] [2020-11-06 21:58:24,193 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 [2020-11-06 21:58:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:24,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-06 21:58:24,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:24,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395935158] [2020-11-06 21:58:24,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:24,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301970241] [2020-11-06 21:58:24,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:24,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-06 21:58:24,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718684408] [2020-11-06 21:58:24,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 21:58:24,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:24,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 21:58:24,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-06 21:58:24,360 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-11-06 21:58:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:24,490 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-11-06 21:58:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 21:58:24,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-06 21:58:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:24,493 INFO L225 Difference]: With dead ends: 51 [2020-11-06 21:58:24,493 INFO L226 Difference]: Without dead ends: 33 [2020-11-06 21:58:24,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-06 21:58:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-06 21:58:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-06 21:58:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-06 21:58:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-06 21:58:24,503 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 25 [2020-11-06 21:58:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:24,503 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-06 21:58:24,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 21:58:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-06 21:58:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 21:58:24,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:24,505 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:24,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:24,718 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:24,720 INFO L82 PathProgramCache]: Analyzing trace with hash -598619523, now seen corresponding path program 2 times [2020-11-06 21:58:24,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:24,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328407132] [2020-11-06 21:58:24,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:24,737 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:24,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027210221] [2020-11-06 21:58:24,738 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 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 [2020-11-06 21:58:24,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 21:58:24,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:58:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-06 21:58:24,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:24,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328407132] [2020-11-06 21:58:24,916 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:24,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027210221] [2020-11-06 21:58:24,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:24,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-06 21:58:24,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540122810] [2020-11-06 21:58:24,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 21:58:24,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:24,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 21:58:24,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-06 21:58:24,919 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-11-06 21:58:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:25,043 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-11-06 21:58:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 21:58:25,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-11-06 21:58:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:25,045 INFO L225 Difference]: With dead ends: 53 [2020-11-06 21:58:25,045 INFO L226 Difference]: Without dead ends: 35 [2020-11-06 21:58:25,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-06 21:58:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-06 21:58:25,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-06 21:58:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-06 21:58:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-06 21:58:25,052 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2020-11-06 21:58:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:25,052 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-06 21:58:25,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 21:58:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-06 21:58:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 21:58:25,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:25,054 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:25,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:25,268 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:25,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2017120000, now seen corresponding path program 3 times [2020-11-06 21:58:25,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:25,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067118140] [2020-11-06 21:58:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:25,295 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:25,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831734023] [2020-11-06 21:58:25,295 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 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 [2020-11-06 21:58:25,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-06 21:58:25,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:58:25,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-06 21:58:25,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:25,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067118140] [2020-11-06 21:58:25,510 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:25,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831734023] [2020-11-06 21:58:25,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:25,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-06 21:58:25,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142906245] [2020-11-06 21:58:25,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 21:58:25,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:25,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 21:58:25,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-06 21:58:25,512 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-11-06 21:58:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:25,672 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-11-06 21:58:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 21:58:25,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-11-06 21:58:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:25,673 INFO L225 Difference]: With dead ends: 55 [2020-11-06 21:58:25,673 INFO L226 Difference]: Without dead ends: 37 [2020-11-06 21:58:25,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-06 21:58:25,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-06 21:58:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-06 21:58:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-06 21:58:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-06 21:58:25,680 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 29 [2020-11-06 21:58:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:25,680 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-06 21:58:25,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 21:58:25,681 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-06 21:58:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 21:58:25,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:25,682 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:25,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:25,896 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:25,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1694839867, now seen corresponding path program 4 times [2020-11-06 21:58:25,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:25,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701100156] [2020-11-06 21:58:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:25,915 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:25,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088549959] [2020-11-06 21:58:25,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:25,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 21:58:25,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:58:25,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-06 21:58:25,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:26,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701100156] [2020-11-06 21:58:26,229 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:26,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088549959] [2020-11-06 21:58:26,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:26,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-06 21:58:26,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607481496] [2020-11-06 21:58:26,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-06 21:58:26,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-06 21:58:26,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-11-06 21:58:26,231 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 15 states. [2020-11-06 21:58:26,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:26,628 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-11-06 21:58:26,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 21:58:26,629 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-11-06 21:58:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:26,632 INFO L225 Difference]: With dead ends: 55 [2020-11-06 21:58:26,632 INFO L226 Difference]: Without dead ends: 51 [2020-11-06 21:58:26,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-11-06 21:58:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-06 21:58:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-11-06 21:58:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-06 21:58:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-11-06 21:58:26,644 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 31 [2020-11-06 21:58:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:26,645 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-11-06 21:58:26,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-06 21:58:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-11-06 21:58:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-06 21:58:26,646 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:26,646 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:26,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-06 21:58:26,861 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:26,862 INFO L82 PathProgramCache]: Analyzing trace with hash 816356936, now seen corresponding path program 5 times [2020-11-06 21:58:26,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:26,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951150250] [2020-11-06 21:58:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:26,882 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:26,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154503113] [2020-11-06 21:58:26,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_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 [2020-11-06 21:58:26,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-06 21:58:26,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:58:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-06 21:58:26,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:29,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951150250] [2020-11-06 21:58:29,563 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:29,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154503113] [2020-11-06 21:58:29,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:29,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-06 21:58:29,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801522682] [2020-11-06 21:58:29,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 21:58:29,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:29,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 21:58:29,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=90, Unknown=1, NotChecked=0, Total=110 [2020-11-06 21:58:29,567 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 11 states. [2020-11-06 21:58:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:38,314 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-11-06 21:58:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 21:58:38,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-11-06 21:58:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:38,317 INFO L225 Difference]: With dead ends: 70 [2020-11-06 21:58:38,317 INFO L226 Difference]: Without dead ends: 52 [2020-11-06 21:58:38,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=27, Invalid=128, Unknown=1, NotChecked=0, Total=156 [2020-11-06 21:58:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-06 21:58:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-06 21:58:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-06 21:58:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-11-06 21:58:38,325 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 33 [2020-11-06 21:58:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:38,326 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-11-06 21:58:38,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 21:58:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-11-06 21:58:38,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-06 21:58:38,327 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:38,327 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:38,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:38,542 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:38,543 INFO L82 PathProgramCache]: Analyzing trace with hash -471513656, now seen corresponding path program 6 times [2020-11-06 21:58:38,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:38,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825003487] [2020-11-06 21:58:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:58:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:58:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-06 21:58:38,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825003487] [2020-11-06 21:58:38,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:58:38,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:58:38,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514218177] [2020-11-06 21:58:38,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:58:38,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:38,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:58:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:58:38,689 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 4 states. [2020-11-06 21:58:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:38,849 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-11-06 21:58:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 21:58:38,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-06 21:58:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:38,852 INFO L225 Difference]: With dead ends: 68 [2020-11-06 21:58:38,852 INFO L226 Difference]: Without dead ends: 54 [2020-11-06 21:58:38,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:58:38,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-06 21:58:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-11-06 21:58:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-06 21:58:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-11-06 21:58:38,871 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 33 [2020-11-06 21:58:38,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:38,872 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-11-06 21:58:38,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:58:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-11-06 21:58:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-06 21:58:38,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:38,878 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:38,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 21:58:38,878 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:38,879 INFO L82 PathProgramCache]: Analyzing trace with hash 229550922, now seen corresponding path program 7 times [2020-11-06 21:58:38,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:38,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843562435] [2020-11-06 21:58:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:38,907 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:38,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549277308] [2020-11-06 21:58:38,908 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-11-06 21:58:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:38,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-06 21:58:38,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:39,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843562435] [2020-11-06 21:58:39,206 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:39,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549277308] [2020-11-06 21:58:39,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:39,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-06 21:58:39,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181720090] [2020-11-06 21:58:39,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 21:58:39,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:39,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 21:58:39,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-06 21:58:39,208 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 11 states. [2020-11-06 21:58:39,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:39,577 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-11-06 21:58:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 21:58:39,582 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-11-06 21:58:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:39,583 INFO L225 Difference]: With dead ends: 72 [2020-11-06 21:58:39,583 INFO L226 Difference]: Without dead ends: 52 [2020-11-06 21:58:39,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-11-06 21:58:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-06 21:58:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-06 21:58:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-06 21:58:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-06 21:58:39,593 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 33 [2020-11-06 21:58:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:39,594 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-06 21:58:39,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 21:58:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-06 21:58:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-06 21:58:39,595 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:39,595 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:39,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:39,809 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:39,810 INFO L82 PathProgramCache]: Analyzing trace with hash -281941747, now seen corresponding path program 8 times [2020-11-06 21:58:39,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:39,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258727134] [2020-11-06 21:58:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:39,823 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:39,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761773932] [2020-11-06 21:58:39,823 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 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 [2020-11-06 21:58:39,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 21:58:39,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:58:39,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-06 21:58:39,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 21:58:40,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258727134] [2020-11-06 21:58:40,058 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:40,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761773932] [2020-11-06 21:58:40,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:40,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-06 21:58:40,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19762277] [2020-11-06 21:58:40,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 21:58:40,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:40,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 21:58:40,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-06 21:58:40,061 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 9 states. [2020-11-06 21:58:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:40,240 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-11-06 21:58:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 21:58:40,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-06 21:58:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:40,242 INFO L225 Difference]: With dead ends: 69 [2020-11-06 21:58:40,243 INFO L226 Difference]: Without dead ends: 50 [2020-11-06 21:58:40,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 21:58:40,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-06 21:58:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-06 21:58:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-06 21:58:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-11-06 21:58:40,254 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 35 [2020-11-06 21:58:40,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:40,255 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-11-06 21:58:40,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 21:58:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-11-06 21:58:40,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-06 21:58:40,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:40,256 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:40,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-06 21:58:40,457 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:40,458 INFO L82 PathProgramCache]: Analyzing trace with hash 297769820, now seen corresponding path program 1 times [2020-11-06 21:58:40,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:40,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539261116] [2020-11-06 21:58:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:40,469 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:40,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293644766] [2020-11-06 21:58:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-11-06 21:58:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:40,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-06 21:58:40,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 21:58:40,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539261116] [2020-11-06 21:58:40,717 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:40,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293644766] [2020-11-06 21:58:40,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:40,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-06 21:58:40,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134898392] [2020-11-06 21:58:40,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-06 21:58:40,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:40,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-06 21:58:40,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-06 21:58:40,721 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 12 states. [2020-11-06 21:58:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:41,067 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-11-06 21:58:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 21:58:41,068 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-11-06 21:58:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:41,069 INFO L225 Difference]: With dead ends: 57 [2020-11-06 21:58:41,069 INFO L226 Difference]: Without dead ends: 40 [2020-11-06 21:58:41,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-11-06 21:58:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-06 21:58:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-06 21:58:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-06 21:58:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-06 21:58:41,077 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 36 [2020-11-06 21:58:41,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:41,077 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-06 21:58:41,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-06 21:58:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-06 21:58:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-06 21:58:41,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:41,079 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:41,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-06 21:58:41,280 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:41,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:41,281 INFO L82 PathProgramCache]: Analyzing trace with hash -974999411, now seen corresponding path program 9 times [2020-11-06 21:58:41,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:41,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21403984] [2020-11-06 21:58:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:41,293 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:41,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800543856] [2020-11-06 21:58:41,293 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:41,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-06 21:58:41,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:58:41,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-06 21:58:41,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 21:58:41,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21403984] [2020-11-06 21:58:41,509 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:41,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800543856] [2020-11-06 21:58:41,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:41,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-06 21:58:41,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629713022] [2020-11-06 21:58:41,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 21:58:41,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:41,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 21:58:41,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-06 21:58:41,511 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 10 states. [2020-11-06 21:58:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:43,874 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-11-06 21:58:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 21:58:43,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-11-06 21:58:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:43,876 INFO L225 Difference]: With dead ends: 59 [2020-11-06 21:58:43,876 INFO L226 Difference]: Without dead ends: 45 [2020-11-06 21:58:43,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-11-06 21:58:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-06 21:58:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-11-06 21:58:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-06 21:58:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-11-06 21:58:43,884 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 35 [2020-11-06 21:58:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:43,885 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-11-06 21:58:43,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 21:58:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-11-06 21:58:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-06 21:58:43,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:43,886 INFO L422 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:44,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-06 21:58:44,100 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:44,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1093300496, now seen corresponding path program 10 times [2020-11-06 21:58:44,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:44,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754040799] [2020-11-06 21:58:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:44,113 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:44,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499209298] [2020-11-06 21:58:44,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:44,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 21:58:44,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:58:44,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-06 21:58:44,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:44,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754040799] [2020-11-06 21:58:44,762 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:44,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499209298] [2020-11-06 21:58:44,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:44,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-06 21:58:44,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953840568] [2020-11-06 21:58:44,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 21:58:44,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:44,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 21:58:44,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-11-06 21:58:44,765 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-11-06 21:58:53,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:53,345 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-11-06 21:58:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 21:58:53,347 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-11-06 21:58:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:53,348 INFO L225 Difference]: With dead ends: 66 [2020-11-06 21:58:53,348 INFO L226 Difference]: Without dead ends: 47 [2020-11-06 21:58:53,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=55, Invalid=286, Unknown=1, NotChecked=0, Total=342 [2020-11-06 21:58:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-06 21:58:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-11-06 21:58:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-06 21:58:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-11-06 21:58:53,356 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 37 [2020-11-06 21:58:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:53,356 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-11-06 21:58:53,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 21:58:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-11-06 21:58:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 21:58:53,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:53,357 INFO L422 BasicCegarLoop]: trace histogram [9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:53,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:53,568 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:53,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:53,568 INFO L82 PathProgramCache]: Analyzing trace with hash 159653075, now seen corresponding path program 11 times [2020-11-06 21:58:53,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:53,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599618398] [2020-11-06 21:58:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:53,591 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:58:53,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913496212] [2020-11-06 21:58:53,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:58:53,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-06 21:58:53,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:58:53,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-06 21:58:53,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:58:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:54,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599618398] [2020-11-06 21:58:54,378 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:58:54,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913496212] [2020-11-06 21:58:54,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:58:54,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-06 21:58:54,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695092498] [2020-11-06 21:58:54,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 21:58:54,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 21:58:54,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-11-06 21:58:54,381 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 14 states. [2020-11-06 21:59:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:00,752 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-11-06 21:59:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 21:59:00,755 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-11-06 21:59:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:00,756 INFO L225 Difference]: With dead ends: 66 [2020-11-06 21:59:00,756 INFO L226 Difference]: Without dead ends: 46 [2020-11-06 21:59:00,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=354, Unknown=1, NotChecked=0, Total=420 [2020-11-06 21:59:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-06 21:59:00,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-06 21:59:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-06 21:59:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-11-06 21:59:00,765 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 39 [2020-11-06 21:59:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:00,765 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-11-06 21:59:00,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 21:59:00,765 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-11-06 21:59:00,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-06 21:59:00,766 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:00,766 INFO L422 BasicCegarLoop]: trace histogram [10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:00,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-06 21:59:00,970 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:00,971 INFO L82 PathProgramCache]: Analyzing trace with hash 572646358, now seen corresponding path program 12 times [2020-11-06 21:59:00,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:00,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412148291] [2020-11-06 21:59:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:00,981 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 21:59:00,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320278987] [2020-11-06 21:59:00,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:01,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-06 21:59:01,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:01,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-06 21:59:01,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-06 21:59:01,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412148291] [2020-11-06 21:59:01,449 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 21:59:01,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320278987] [2020-11-06 21:59:01,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 21:59:01,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-06 21:59:01,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482811525] [2020-11-06 21:59:01,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 21:59:01,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:01,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 21:59:01,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-11-06 21:59:01,451 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 13 states. [2020-11-06 21:59:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:02,005 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-11-06 21:59:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-06 21:59:02,007 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-11-06 21:59:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:02,008 INFO L225 Difference]: With dead ends: 49 [2020-11-06 21:59:02,008 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 21:59:02,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-11-06 21:59:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 21:59:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 21:59:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 21:59:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 21:59:02,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-11-06 21:59:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:02,010 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 21:59:02,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 21:59:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 21:59:02,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 21:59:02,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-06 21:59:02,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 21:59:02,438 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 258 [2020-11-06 22:05:14,913 WARN L194 SmtUtils]: Spent 6.21 m on a formula simplification. DAG size of input: 249 DAG size of output: 111 [2020-11-06 22:05:15,132 WARN L194 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-11-06 22:05:15,301 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-06 22:05:15,716 WARN L194 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 8 [2020-11-06 22:05:16,086 WARN L194 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2020-11-06 22:05:16,112 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:05:16,112 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:05:16,112 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:05:16,112 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:05:16,112 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:05:16,112 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:05:16,112 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:05:16,112 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:05:16,112 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:05:16,113 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:05:16,113 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:05:16,113 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 32 48) the Hoare annotation is: true [2020-11-06 22:05:16,113 INFO L266 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-11-06 22:05:16,113 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 32 48) no Hoare annotation was computed. [2020-11-06 22:05:16,113 INFO L262 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (<= main_~y~0 18) (<= 18 main_~y~0) (= main_~x~0 63) (= main_~x~0 (* main_~g~0 7))) [2020-11-06 22:05:16,113 INFO L262 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (= 63 (+ main_~g~0 (* main_~y~0 3))) (<= 18 main_~y~0) (<= 63 main_~x~0) (= main_~x~0 (* main_~g~0 7))) [2020-11-06 22:05:16,114 INFO L262 CegarLoopResult]: At program point L43-1(line 43) the Hoare annotation is: (and (= 63 (+ main_~g~0 (* main_~y~0 3))) (<= 18 main_~y~0) (<= 63 main_~x~0) (= main_~x~0 (* main_~g~0 7))) [2020-11-06 22:05:16,114 INFO L262 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= main_~x~0 63) (= main_~y~0 18) (<= 63 main_~x~0)) [2020-11-06 22:05:16,114 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 32 48) no Hoare annotation was computed. [2020-11-06 22:05:16,114 INFO L266 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-11-06 22:05:16,114 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-11-06 22:05:16,114 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-11-06 22:05:16,115 INFO L262 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-11-06 22:05:16,115 INFO L266 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-06 22:05:16,115 INFO L266 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-11-06 22:05:16,115 INFO L266 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-11-06 22:05:16,115 INFO L266 CegarLoopResult]: For program point gcd_testEXIT(lines 12 29) no Hoare annotation was computed. [2020-11-06 22:05:16,115 INFO L266 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-11-06 22:05:16,115 INFO L266 CegarLoopResult]: For program point L15-1(lines 13 29) no Hoare annotation was computed. [2020-11-06 22:05:16,116 INFO L269 CegarLoopResult]: At program point gcd_testENTRY(lines 12 29) the Hoare annotation is: true [2020-11-06 22:05:16,116 INFO L266 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-11-06 22:05:16,116 INFO L262 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (let ((.cse0 (= gcd_test_~b |gcd_test_#in~b|)) (.cse2 (* gcd_test_~b 3)) (.cse1 (= (+ gcd_test_~a (* |gcd_test_#in~b| 3)) |gcd_test_#in~a|)) (.cse5 (< 0 gcd_test_~a)) (.cse3 (* gcd_test_~b (- 1))) (.cse4 (* |gcd_test_#in~a| (- 2)))) (or (< |gcd_test_#in~b| (+ (div (+ (* |gcd_test_#in~a| 2) (* |gcd_test_#in~b| (- 1)) (- 1)) 6) 1)) (and .cse0 (= |gcd_test_#in~a| (+ gcd_test_~b gcd_test_~a))) (and .cse1 (= (+ .cse2 (* gcd_test_~a 7)) |gcd_test_#in~a|)) (and .cse1 (= (+ .cse2 gcd_test_~a) |gcd_test_#in~a|)) (and (or (= (mod (+ gcd_test_~b |gcd_test_#in~a| |gcd_test_#in~b|) 2) 0) (not (= gcd_test_~b 0))) (<= (div (+ .cse3 .cse4 |gcd_test_#in~b|) (- 6)) |gcd_test_#in~b|) .cse5) (and .cse0 (<= gcd_test_~a |gcd_test_#in~a|) (<= |gcd_test_#in~a| gcd_test_~a)) (exists ((aux_mod_v_gcd_test_~b_27_77 Int) (aux_mod_aux_div_gcd_test_~a_160_66 Int) (aux_div_aux_div_gcd_test_~a_160_66 Int) (aux_div_aux_div_v_gcd_test_~b_27_77_96 Int)) (and (<= 0 aux_mod_aux_div_gcd_test_~a_160_66) (<= aux_div_aux_div_gcd_test_~a_160_66 |gcd_test_#in~b|) (< aux_mod_v_gcd_test_~b_27_77 3) (< aux_mod_aux_div_gcd_test_~a_160_66 3) (<= 0 aux_mod_v_gcd_test_~b_27_77) (<= (+ (* 3 |gcd_test_#in~a|) aux_mod_v_gcd_test_~b_27_77 (* 2 aux_mod_aux_div_gcd_test_~a_160_66)) (+ (* 6 aux_div_aux_div_gcd_test_~a_160_66) aux_div_aux_div_v_gcd_test_~b_27_77_96 (* 2 |gcd_test_#in~b|))) (<= (* 3 aux_div_aux_div_v_gcd_test_~b_27_77_96) (+ (* 2 |gcd_test_#in~a|) (* 2 aux_mod_v_gcd_test_~b_27_77))))) (exists ((aux_div_gcd_test_~a_54 Int) (aux_div_aux_div_v_gcd_test_~b_30_55_70 Int) (aux_mod_aux_div_v_gcd_test_~b_30_55_70 Int)) (let ((.cse6 (* 2 aux_mod_aux_div_v_gcd_test_~b_30_55_70)) (.cse7 (* 6 aux_div_aux_div_v_gcd_test_~b_30_55_70))) (and (<= 0 aux_mod_aux_div_v_gcd_test_~b_30_55_70) (<= aux_div_aux_div_v_gcd_test_~b_30_55_70 |gcd_test_#in~b|) (<= (+ .cse6 (* 3 |gcd_test_#in~a|)) (+ (* 3 aux_div_gcd_test_~a_54) .cse7 |gcd_test_#in~b|)) (<= (+ aux_div_gcd_test_~a_54 .cse6 (* 2 |gcd_test_#in~a|)) (+ .cse7 (* 2 |gcd_test_#in~b|))) (< aux_mod_aux_div_v_gcd_test_~b_30_55_70 3)))) (<= (div (+ (div |gcd_test_#in~b| 3) (* |gcd_test_#in~a| (- 1))) (- 3)) |gcd_test_#in~b|) (and (= |gcd_test_#in~a| (+ (* gcd_test_~b 2) gcd_test_~a)) .cse0) (and (= |gcd_test_#in~a| (+ .cse2 (* gcd_test_~a 4))) .cse1) (and .cse5 (<= (div (+ .cse3 (* gcd_test_~a (- 1)) .cse4 |gcd_test_#in~b|) (- 6)) |gcd_test_#in~b|)))) [2020-11-06 22:05:16,116 INFO L266 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-06 22:05:16,116 INFO L266 CegarLoopResult]: For program point L14-2(lines 13 29) no Hoare annotation was computed. [2020-11-06 22:05:16,117 INFO L266 CegarLoopResult]: For program point gcd_testFINAL(lines 12 29) no Hoare annotation was computed. [2020-11-06 22:05:16,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] [2020-11-06 22:05:16,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] [2020-11-06 22:05:16,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] [2020-11-06 22:05:16,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] [2020-11-06 22:05:16,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] [2020-11-06 22:05:16,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] [2020-11-06 22:05:16,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] [2020-11-06 22:05:16,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] [2020-11-06 22:05:16,147 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,147 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,147 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:05:16 BoogieIcfgContainer [2020-11-06 22:05:16,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:05:16,152 INFO L168 Benchmark]: Toolchain (without parser) took 415261.45 ms. Allocated memory was 158.3 MB in the beginning and 201.3 MB in the end (delta: 43.0 MB). Free memory was 133.1 MB in the beginning and 172.4 MB in the end (delta: -39.4 MB). Peak memory consumption was 109.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:05:16,152 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:05:16,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.05 ms. Allocated memory is still 158.3 MB. Free memory was 132.3 MB in the beginning and 123.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:05:16,153 INFO L168 Benchmark]: Boogie Preprocessor took 76.35 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:05:16,154 INFO L168 Benchmark]: RCFGBuilder took 503.55 ms. Allocated memory is still 158.3 MB. Free memory was 121.5 MB in the beginning and 107.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:05:16,154 INFO L168 Benchmark]: TraceAbstraction took 414323.85 ms. Allocated memory was 158.3 MB in the beginning and 201.3 MB in the end (delta: 43.0 MB). Free memory was 106.8 MB in the beginning and 172.4 MB in the end (delta: -65.6 MB). Peak memory consumption was 83.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:05:16,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 338.05 ms. Allocated memory is still 158.3 MB. Free memory was 132.3 MB in the beginning and 123.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 76.35 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 503.55 ms. Allocated memory is still 158.3 MB. Free memory was 121.5 MB in the beginning and 107.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 414323.85 ms. Allocated memory was 158.3 MB in the beginning and 201.3 MB in the end (delta: 43.0 MB). Free memory was 106.8 MB in the beginning and 172.4 MB in the end (delta: -65.6 MB). Peak memory consumption was 83.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant [2020-11-06 22:05:16,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] [2020-11-06 22:05:16,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] [2020-11-06 22:05:16,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] [2020-11-06 22:05:16,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] [2020-11-06 22:05:16,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,171 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,171 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,171 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_gcd_test_~a_160_66,QUANTIFIED] [2020-11-06 22:05:16,171 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] [2020-11-06 22:05:16,171 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_27_77_96,QUANTIFIED] [2020-11-06 22:05:16,171 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~b_27_77,QUANTIFIED] [2020-11-06 22:05:16,171 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,172 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,172 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,172 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] [2020-11-06 22:05:16,172 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,172 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_54,QUANTIFIED] [2020-11-06 22:05:16,172 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,172 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] [2020-11-06 22:05:16,172 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_div_v_gcd_test_~b_30_55_70,QUANTIFIED] Derived loop invariant: ((((((((((\old(b) < (\old(a) * 2 + \old(b) * -1 + -1) / 6 + 1 || (b == \old(b) && \old(a) == b + a)) || (a + \old(b) * 3 == \old(a) && b * 3 + a * 7 == \old(a))) || (a + \old(b) * 3 == \old(a) && b * 3 + a == \old(a))) || ((((b + \old(a) + \old(b)) % 2 == 0 || !(b == 0)) && (b * -1 + \old(a) * -2 + \old(b)) / -6 <= \old(b)) && 0 < a)) || ((b == \old(b) && a <= \old(a)) && \old(a) <= a)) || (\exists aux_mod_v_gcd_test_~b_27_77 : int, aux_mod_aux_div_gcd_test_~a_160_66 : int, aux_div_aux_div_gcd_test_~a_160_66 : int, aux_div_aux_div_v_gcd_test_~b_27_77_96 : int :: (((((0 <= aux_mod_aux_div_gcd_test_~a_160_66 && aux_div_aux_div_gcd_test_~a_160_66 <= \old(b)) && aux_mod_v_gcd_test_~b_27_77 < 3) && aux_mod_aux_div_gcd_test_~a_160_66 < 3) && 0 <= aux_mod_v_gcd_test_~b_27_77) && 3 * \old(a) + aux_mod_v_gcd_test_~b_27_77 + 2 * aux_mod_aux_div_gcd_test_~a_160_66 <= 6 * aux_div_aux_div_gcd_test_~a_160_66 + aux_div_aux_div_v_gcd_test_~b_27_77_96 + 2 * \old(b)) && 3 * aux_div_aux_div_v_gcd_test_~b_27_77_96 <= 2 * \old(a) + 2 * aux_mod_v_gcd_test_~b_27_77)) || (\exists aux_div_gcd_test_~a_54 : int, aux_div_aux_div_v_gcd_test_~b_30_55_70 : int, aux_mod_aux_div_v_gcd_test_~b_30_55_70 : int :: (((0 <= aux_mod_aux_div_v_gcd_test_~b_30_55_70 && aux_div_aux_div_v_gcd_test_~b_30_55_70 <= \old(b)) && 2 * aux_mod_aux_div_v_gcd_test_~b_30_55_70 + 3 * \old(a) <= 3 * aux_div_gcd_test_~a_54 + 6 * aux_div_aux_div_v_gcd_test_~b_30_55_70 + \old(b)) && aux_div_gcd_test_~a_54 + 2 * aux_mod_aux_div_v_gcd_test_~b_30_55_70 + 2 * \old(a) <= 6 * aux_div_aux_div_v_gcd_test_~b_30_55_70 + 2 * \old(b)) && aux_mod_aux_div_v_gcd_test_~b_30_55_70 < 3)) || (\old(b) / 3 + \old(a) * -1) / -3 <= \old(b)) || (\old(a) == b * 2 + a && b == \old(b))) || (\old(a) == b * 3 + a * 4 && a + \old(b) * 3 == \old(a))) || (0 < a && (b * -1 + a * -1 + \old(a) * -2 + \old(b)) / -6 <= \old(b)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.2s, OverallIterations: 17, TraceHistogramMax: 10, AutomataDifference: 28.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 373.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 401 SDtfs, 212 SDslu, 2247 SDs, 0 SdLazy, 2220 SolverSat, 72 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 21.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 520 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 20 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 123 PreInvPairs, 163 NumberOfFragments, 345 HoareAnnotationTreeSize, 123 FomulaSimplifications, 3058 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 13 FomulaSimplificationsInter, 6457 FormulaSimplificationTreeSizeReductionInter, 373.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 516 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 499 ConstructedInterpolants, 12 QuantifiedInterpolants, 112055 SizeOfPredicates, 59 NumberOfNonLiveVariables, 2101 ConjunctsInSsa, 218 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 77/533 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...