/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-b8ad66e [2020-10-23 17:56:17,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:17,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:17,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:17,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:17,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:17,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:17,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:17,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:17,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:17,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:17,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:17,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:17,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:17,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:17,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:17,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:17,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:18,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:18,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:18,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:18,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:18,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:18,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:18,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:56:18,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:18,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:18,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:18,035 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 [2020-10-23 17:56:18,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:18,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:18,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:18,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:18,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:18,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:18,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:18,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:18,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:18,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:18,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:18,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:18,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:18,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:18,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:18,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:18,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:18,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:18,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:18,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:18,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:18,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:18,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:18,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:18,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:18,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:18,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:18,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:18,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:18,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:18,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:18,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:18,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:18,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:18,507 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:18,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/gcd_4.c [2020-10-23 17:56:18,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bff0d80e/bada3b3c86c94e719c2d3db62637f031/FLAGe40387164 [2020-10-23 17:56:19,169 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:19,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/gcd_4.c [2020-10-23 17:56:19,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bff0d80e/bada3b3c86c94e719c2d3db62637f031/FLAGe40387164 [2020-10-23 17:56:19,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bff0d80e/bada3b3c86c94e719c2d3db62637f031 [2020-10-23 17:56:19,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:19,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:19,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:19,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:19,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:19,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e166f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19, skipping insertion in model container [2020-10-23 17:56:19,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:19,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:19,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:19,762 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:19,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:19,795 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:19,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19 WrapperNode [2020-10-23 17:56:19,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:19,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:19,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:19,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:19,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (1/1) ... [2020-10-23 17:56:19,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:19,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:19,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:19,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:19,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (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 [2020-10-23 17:56:19,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:19,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 17:56:19,934 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2020-10-23 17:56:19,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 17:56:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 17:56:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2020-10-23 17:56:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:20,336 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:20,337 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 17:56:20,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:20 BoogieIcfgContainer [2020-10-23 17:56:20,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:20,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:20,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:20,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:20,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:19" (1/3) ... [2020-10-23 17:56:20,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140ec207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:20, skipping insertion in model container [2020-10-23 17:56:20,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:19" (2/3) ... [2020-10-23 17:56:20,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140ec207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:20, skipping insertion in model container [2020-10-23 17:56:20,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:20" (3/3) ... [2020-10-23 17:56:20,348 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2020-10-23 17:56:20,363 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:20,369 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:20,386 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:20,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:20,418 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:20,418 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:20,418 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:20,418 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:20,419 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:20,419 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:20,419 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-23 17:56:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 17:56:20,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:20,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:20,447 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:20,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1323676825, now seen corresponding path program 1 times [2020-10-23 17:56:20,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:20,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70590295] [2020-10-23 17:56:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:20,619 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:20,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712416222] [2020-10-23 17:56:20,620 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 [2020-10-23 17:56:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:20,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 17:56:20,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:20,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70590295] [2020-10-23 17:56:20,875 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:20,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712416222] [2020-10-23 17:56:20,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:20,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 17:56:20,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327665178] [2020-10-23 17:56:20,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 17:56:20,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:20,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 17:56:20,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:56:20,903 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-23 17:56:21,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:21,030 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2020-10-23 17:56:21,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 17:56:21,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-23 17:56:21,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:21,043 INFO L225 Difference]: With dead ends: 65 [2020-10-23 17:56:21,043 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 17:56:21,047 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 [2020-10-23 17:56:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 17:56:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-10-23 17:56:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 17:56:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-10-23 17:56:21,090 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 19 [2020-10-23 17:56:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:21,091 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-10-23 17:56:21,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 17:56:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-10-23 17:56:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 17:56:21,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:21,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:21,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-10-23 17:56:21,307 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:21,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1716703835, now seen corresponding path program 1 times [2020-10-23 17:56:21,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:21,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057444397] [2020-10-23 17:56:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:21,337 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:21,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451058903] [2020-10-23 17:56:21,341 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 [2020-10-23 17:56:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:21,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 17:56:21,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:21,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057444397] [2020-10-23 17:56:21,628 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:21,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451058903] [2020-10-23 17:56:21,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:21,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 17:56:21,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661043567] [2020-10-23 17:56:21,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 17:56:21,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:21,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 17:56:21,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:56:21,632 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states. [2020-10-23 17:56:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:21,734 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-23 17:56:21,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 17:56:21,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-23 17:56:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:21,736 INFO L225 Difference]: With dead ends: 50 [2020-10-23 17:56:21,737 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 17:56:21,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 17:56:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 17:56:21,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-10-23 17:56:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 17:56:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-23 17:56:21,746 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2020-10-23 17:56:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:21,747 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-23 17:56:21,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 17:56:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-23 17:56:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 17:56:21,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:21,749 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] [2020-10-23 17:56:21,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:21,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:21,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1756824846, now seen corresponding path program 1 times [2020-10-23 17:56:21,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:21,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254118290] [2020-10-23 17:56:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:22,003 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:22,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863130873] [2020-10-23 17:56:22,004 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 [2020-10-23 17:56:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:22,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 17:56:22,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:22,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254118290] [2020-10-23 17:56:22,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:22,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863130873] [2020-10-23 17:56:22,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:22,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 17:56:22,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858514857] [2020-10-23 17:56:22,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 17:56:22,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 17:56:22,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:56:22,164 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-23 17:56:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:22,220 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-23 17:56:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 17:56:22,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-23 17:56:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:22,222 INFO L225 Difference]: With dead ends: 43 [2020-10-23 17:56:22,222 INFO L226 Difference]: Without dead ends: 29 [2020-10-23 17:56:22,223 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 [2020-10-23 17:56:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-23 17:56:22,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-23 17:56:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 17:56:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-23 17:56:22,231 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2020-10-23 17:56:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:22,232 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-23 17:56:22,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 17:56:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-23 17:56:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 17:56:22,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:22,233 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] [2020-10-23 17:56:22,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:22,447 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash 791528247, now seen corresponding path program 1 times [2020-10-23 17:56:22,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:22,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310467232] [2020-10-23 17:56:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:22,489 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:22,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265830381] [2020-10-23 17:56:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-23 17:56:22,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:22,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310467232] [2020-10-23 17:56:22,656 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:22,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265830381] [2020-10-23 17:56:22,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:22,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-23 17:56:22,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242947112] [2020-10-23 17:56:22,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 17:56:22,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:22,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 17:56:22,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 17:56:22,659 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-23 17:56:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:22,734 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-23 17:56:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 17:56:22,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-23 17:56:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:22,736 INFO L225 Difference]: With dead ends: 49 [2020-10-23 17:56:22,737 INFO L226 Difference]: Without dead ends: 31 [2020-10-23 17:56:22,737 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 [2020-10-23 17:56:22,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-23 17:56:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-23 17:56:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 17:56:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-23 17:56:22,744 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 23 [2020-10-23 17:56:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:22,744 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-23 17:56:22,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 17:56:22,744 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-23 17:56:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 17:56:22,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:22,746 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] [2020-10-23 17:56:22,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:22,959 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:22,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2080669382, now seen corresponding path program 1 times [2020-10-23 17:56:22,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:22,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246213328] [2020-10-23 17:56:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:22,979 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:22,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178799625] [2020-10-23 17:56:22,980 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 [2020-10-23 17:56:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:23,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-23 17:56:23,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:23,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246213328] [2020-10-23 17:56:23,157 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:23,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178799625] [2020-10-23 17:56:23,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:23,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-23 17:56:23,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910881231] [2020-10-23 17:56:23,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 17:56:23,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:23,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 17:56:23,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:56:23,160 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-23 17:56:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:23,281 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-23 17:56:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 17:56:23,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-23 17:56:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:23,283 INFO L225 Difference]: With dead ends: 51 [2020-10-23 17:56:23,283 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 17:56:23,284 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 [2020-10-23 17:56:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 17:56:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-23 17:56:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 17:56:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-23 17:56:23,290 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 25 [2020-10-23 17:56:23,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:23,290 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-23 17:56:23,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 17:56:23,291 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-23 17:56:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:56:23,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:23,292 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] [2020-10-23 17:56:23,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:23,506 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:23,507 INFO L82 PathProgramCache]: Analyzing trace with hash -598619523, now seen corresponding path program 2 times [2020-10-23 17:56:23,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:23,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686870135] [2020-10-23 17:56:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:23,525 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:23,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341554741] [2020-10-23 17:56:23,526 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 [2020-10-23 17:56:23,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 17:56:23,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:56:23,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-23 17:56:23,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:23,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686870135] [2020-10-23 17:56:23,740 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:23,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341554741] [2020-10-23 17:56:23,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:23,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-23 17:56:23,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693302997] [2020-10-23 17:56:23,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 17:56:23,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:23,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 17:56:23,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-23 17:56:23,743 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-23 17:56:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:23,907 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-10-23 17:56:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 17:56:23,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-23 17:56:23,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:23,909 INFO L225 Difference]: With dead ends: 53 [2020-10-23 17:56:23,909 INFO L226 Difference]: Without dead ends: 35 [2020-10-23 17:56:23,910 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 [2020-10-23 17:56:23,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-23 17:56:23,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-23 17:56:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-23 17:56:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-23 17:56:23,917 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2020-10-23 17:56:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:23,917 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-23 17:56:23,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 17:56:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-23 17:56:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 17:56:23,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:23,919 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] [2020-10-23 17:56:24,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:24,133 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2017120000, now seen corresponding path program 3 times [2020-10-23 17:56:24,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:24,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536060176] [2020-10-23 17:56:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:24,153 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:24,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330632292] [2020-10-23 17:56:24,153 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 [2020-10-23 17:56:24,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-23 17:56:24,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:56:24,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-23 17:56:24,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:24,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536060176] [2020-10-23 17:56:24,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:24,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330632292] [2020-10-23 17:56:24,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:24,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-23 17:56:24,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25183500] [2020-10-23 17:56:24,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 17:56:24,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:24,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 17:56:24,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-23 17:56:24,441 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-23 17:56:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:24,635 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-23 17:56:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 17:56:24,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-23 17:56:24,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:24,636 INFO L225 Difference]: With dead ends: 55 [2020-10-23 17:56:24,637 INFO L226 Difference]: Without dead ends: 37 [2020-10-23 17:56:24,637 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 [2020-10-23 17:56:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-23 17:56:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-23 17:56:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-23 17:56:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-23 17:56:24,646 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 29 [2020-10-23 17:56:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:24,646 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-23 17:56:24,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 17:56:24,648 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-23 17:56:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 17:56:24,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:24,650 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] [2020-10-23 17:56:24,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:24,851 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:24,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1694839867, now seen corresponding path program 4 times [2020-10-23 17:56:24,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:24,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183062755] [2020-10-23 17:56:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:24,870 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:24,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495994947] [2020-10-23 17:56:24,871 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 [2020-10-23 17:56:24,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 17:56:24,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:56:24,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-23 17:56:24,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:25,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183062755] [2020-10-23 17:56:25,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:25,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495994947] [2020-10-23 17:56:25,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:25,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-23 17:56:25,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009280049] [2020-10-23 17:56:25,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 17:56:25,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:25,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 17:56:25,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-23 17:56:25,176 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 15 states. [2020-10-23 17:56:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:25,533 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-23 17:56:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 17:56:25,534 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-10-23 17:56:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:25,536 INFO L225 Difference]: With dead ends: 55 [2020-10-23 17:56:25,536 INFO L226 Difference]: Without dead ends: 51 [2020-10-23 17:56:25,538 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 [2020-10-23 17:56:25,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-23 17:56:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-23 17:56:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 17:56:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-10-23 17:56:25,549 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 31 [2020-10-23 17:56:25,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:25,550 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-10-23 17:56:25,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 17:56:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-10-23 17:56:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 17:56:25,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:25,551 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] [2020-10-23 17:56:25,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-23 17:56:25,766 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash 816356936, now seen corresponding path program 5 times [2020-10-23 17:56:25,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:25,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699364843] [2020-10-23 17:56:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:25,803 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:25,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137561206] [2020-10-23 17:56:25,803 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 [2020-10-23 17:56:25,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-23 17:56:25,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:56:25,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-23 17:56:25,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:26,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699364843] [2020-10-23 17:56:26,292 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:26,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137561206] [2020-10-23 17:56:26,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:26,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-23 17:56:26,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243483504] [2020-10-23 17:56:26,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 17:56:26,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:26,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 17:56:26,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-23 17:56:26,294 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 11 states. [2020-10-23 17:56:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:43,202 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-10-23 17:56:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 17:56:43,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-23 17:56:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:43,207 INFO L225 Difference]: With dead ends: 70 [2020-10-23 17:56:43,207 INFO L226 Difference]: Without dead ends: 52 [2020-10-23 17:56:43,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-23 17:56:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-23 17:56:43,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-23 17:56:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-23 17:56:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-10-23 17:56:43,227 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 33 [2020-10-23 17:56:43,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:43,230 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-10-23 17:56:43,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 17:56:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-10-23 17:56:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 17:56:43,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:43,232 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] [2020-10-23 17:56:43,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:43,434 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:43,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:43,435 INFO L82 PathProgramCache]: Analyzing trace with hash -471513656, now seen corresponding path program 6 times [2020-10-23 17:56:43,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:43,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904338182] [2020-10-23 17:56:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:43,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-23 17:56:43,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904338182] [2020-10-23 17:56:43,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:43,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:56:43,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508080599] [2020-10-23 17:56:43,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:56:43,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:43,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:56:43,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:56:43,557 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 4 states. [2020-10-23 17:56:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:43,703 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-23 17:56:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 17:56:43,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-23 17:56:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:43,708 INFO L225 Difference]: With dead ends: 68 [2020-10-23 17:56:43,708 INFO L226 Difference]: Without dead ends: 54 [2020-10-23 17:56:43,712 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 [2020-10-23 17:56:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-23 17:56:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-23 17:56:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-23 17:56:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-23 17:56:43,734 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 33 [2020-10-23 17:56:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:43,735 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-23 17:56:43,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:56:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-23 17:56:43,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 17:56:43,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:43,737 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] [2020-10-23 17:56:43,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 17:56:43,742 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:43,742 INFO L82 PathProgramCache]: Analyzing trace with hash 229550922, now seen corresponding path program 7 times [2020-10-23 17:56:43,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:43,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761181374] [2020-10-23 17:56:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:43,764 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:43,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148569534] [2020-10-23 17:56:43,767 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 [2020-10-23 17:56:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:43,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-23 17:56:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:44,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761181374] [2020-10-23 17:56:44,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:44,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148569534] [2020-10-23 17:56:44,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:44,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-23 17:56:44,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79114417] [2020-10-23 17:56:44,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 17:56:44,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:44,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 17:56:44,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-23 17:56:44,175 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 11 states. [2020-10-23 17:56:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:44,651 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-10-23 17:56:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 17:56:44,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-23 17:56:44,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:44,654 INFO L225 Difference]: With dead ends: 72 [2020-10-23 17:56:44,654 INFO L226 Difference]: Without dead ends: 52 [2020-10-23 17:56:44,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-23 17:56:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-23 17:56:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-23 17:56:44,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-23 17:56:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-23 17:56:44,680 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 33 [2020-10-23 17:56:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:44,680 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-23 17:56:44,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 17:56:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-23 17:56:44,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-23 17:56:44,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:44,685 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] [2020-10-23 17:56:44,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:56:44,899 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash -281941747, now seen corresponding path program 8 times [2020-10-23 17:56:44,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:44,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21234856] [2020-10-23 17:56:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:44,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:44,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313325397] [2020-10-23 17:56:44,926 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 [2020-10-23 17:56:45,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 17:56:45,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:56:45,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-23 17:56:45,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 17:56:45,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21234856] [2020-10-23 17:56:45,167 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:45,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313325397] [2020-10-23 17:56:45,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:45,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-23 17:56:45,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715037799] [2020-10-23 17:56:45,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 17:56:45,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:45,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 17:56:45,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-23 17:56:45,169 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 9 states. [2020-10-23 17:56:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:45,390 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-23 17:56:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 17:56:45,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-23 17:56:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:45,392 INFO L225 Difference]: With dead ends: 69 [2020-10-23 17:56:45,393 INFO L226 Difference]: Without dead ends: 50 [2020-10-23 17:56:45,396 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 [2020-10-23 17:56:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-23 17:56:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-23 17:56:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 17:56:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-23 17:56:45,408 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 35 [2020-10-23 17:56:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:45,408 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-23 17:56:45,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 17:56:45,409 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-23 17:56:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 17:56:45,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:45,410 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] [2020-10-23 17:56:45,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-23 17:56:45,626 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:45,627 INFO L82 PathProgramCache]: Analyzing trace with hash 297769820, now seen corresponding path program 1 times [2020-10-23 17:56:45,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:45,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386476533] [2020-10-23 17:56:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:45,646 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:45,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163453510] [2020-10-23 17:56:45,649 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 [2020-10-23 17:56:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:45,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-23 17:56:45,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 17:56:45,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386476533] [2020-10-23 17:56:45,896 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:45,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163453510] [2020-10-23 17:56:45,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:45,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-23 17:56:45,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878184368] [2020-10-23 17:56:45,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 17:56:45,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:45,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 17:56:45,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-23 17:56:45,898 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 12 states. [2020-10-23 17:56:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:46,277 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-23 17:56:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 17:56:46,282 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-23 17:56:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:46,283 INFO L225 Difference]: With dead ends: 57 [2020-10-23 17:56:46,284 INFO L226 Difference]: Without dead ends: 40 [2020-10-23 17:56:46,288 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 [2020-10-23 17:56:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-23 17:56:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-23 17:56:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-23 17:56:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-10-23 17:56:46,304 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 36 [2020-10-23 17:56:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:46,306 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-10-23 17:56:46,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 17:56:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-10-23 17:56:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-23 17:56:46,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:46,308 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] [2020-10-23 17:56:46,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-23 17:56:46,523 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:46,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:46,524 INFO L82 PathProgramCache]: Analyzing trace with hash -974999411, now seen corresponding path program 9 times [2020-10-23 17:56:46,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:46,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025661376] [2020-10-23 17:56:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:46,538 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:46,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634413727] [2020-10-23 17:56:46,544 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 [2020-10-23 17:56:46,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-23 17:56:46,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:56:46,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-23 17:56:46,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-23 17:56:46,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025661376] [2020-10-23 17:56:46,791 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:46,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634413727] [2020-10-23 17:56:46,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:46,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-23 17:56:46,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404569514] [2020-10-23 17:56:46,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 17:56:46,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:46,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 17:56:46,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-23 17:56:46,795 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 10 states. [2020-10-23 17:56:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:53,423 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-10-23 17:56:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 17:56:53,428 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-23 17:56:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:53,429 INFO L225 Difference]: With dead ends: 59 [2020-10-23 17:56:53,429 INFO L226 Difference]: Without dead ends: 45 [2020-10-23 17:56:53,430 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 [2020-10-23 17:56:53,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-23 17:56:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-23 17:56:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-23 17:56:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-23 17:56:53,438 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 35 [2020-10-23 17:56:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:53,439 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-23 17:56:53,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 17:56:53,439 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-23 17:56:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 17:56:53,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:53,441 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] [2020-10-23 17:56:53,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-23 17:56:53,655 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:53,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1093300496, now seen corresponding path program 10 times [2020-10-23 17:56:53,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:53,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697129203] [2020-10-23 17:56:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:53,667 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:56:53,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270277303] [2020-10-23 17:56:53,668 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 [2020-10-23 17:56:53,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 17:56:53,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:56:53,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-23 17:56:53,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:55,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697129203] [2020-10-23 17:56:55,324 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:56:55,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270277303] [2020-10-23 17:56:55,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:56:55,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-23 17:56:55,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192198422] [2020-10-23 17:56:55,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 17:56:55,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:55,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 17:56:55,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-23 17:56:55,328 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-23 17:57:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:02,006 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-23 17:57:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 17:57:02,019 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-23 17:57:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:02,019 INFO L225 Difference]: With dead ends: 64 [2020-10-23 17:57:02,020 INFO L226 Difference]: Without dead ends: 44 [2020-10-23 17:57:02,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=55, Invalid=286, Unknown=1, NotChecked=0, Total=342 [2020-10-23 17:57:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-23 17:57:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-23 17:57:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-23 17:57:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-23 17:57:02,028 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 37 [2020-10-23 17:57:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:02,028 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-23 17:57:02,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 17:57:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-23 17:57:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 17:57:02,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:02,029 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] [2020-10-23 17:57:02,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:02,240 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:02,241 INFO L82 PathProgramCache]: Analyzing trace with hash 159653075, now seen corresponding path program 11 times [2020-10-23 17:57:02,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:02,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721077284] [2020-10-23 17:57:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:02,261 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:57:02,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572829634] [2020-10-23 17:57:02,262 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 [2020-10-23 17:57:02,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-10-23 17:57:02,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:57:02,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-23 17:57:02,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:57:03,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721077284] [2020-10-23 17:57:03,857 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:57:03,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572829634] [2020-10-23 17:57:03,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:57:03,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-23 17:57:03,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680944306] [2020-10-23 17:57:03,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 17:57:03,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:03,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 17:57:03,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-23 17:57:03,860 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 14 states. [2020-10-23 17:57:08,524 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-23 17:57:11,434 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-23 17:57:11,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:11,634 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-23 17:57:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 17:57:11,636 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-23 17:57:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:11,637 INFO L225 Difference]: With dead ends: 63 [2020-10-23 17:57:11,637 INFO L226 Difference]: Without dead ends: 49 [2020-10-23 17:57:11,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=65, Invalid=354, Unknown=1, NotChecked=0, Total=420 [2020-10-23 17:57:11,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-23 17:57:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-23 17:57:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-23 17:57:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-23 17:57:11,657 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 39 [2020-10-23 17:57:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:11,657 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-23 17:57:11,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 17:57:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-23 17:57:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 17:57:11,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:11,659 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] [2020-10-23 17:57:11,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-23 17:57:11,869 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:11,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:11,870 INFO L82 PathProgramCache]: Analyzing trace with hash 572646358, now seen corresponding path program 12 times [2020-10-23 17:57:11,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:11,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892908216] [2020-10-23 17:57:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:11,883 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 17:57:11,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423387270] [2020-10-23 17:57:11,884 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 [2020-10-23 17:57:11,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-10-23 17:57:11,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:57:11,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-23 17:57:11,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 17:57:12,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892908216] [2020-10-23 17:57:12,373 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 17:57:12,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423387270] [2020-10-23 17:57:12,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:57:12,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-23 17:57:12,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465048499] [2020-10-23 17:57:12,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 17:57:12,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:12,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 17:57:12,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-23 17:57:12,375 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 13 states. [2020-10-23 17:57:12,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:12,868 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-10-23 17:57:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 17:57:12,869 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-23 17:57:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:12,869 INFO L225 Difference]: With dead ends: 50 [2020-10-23 17:57:12,870 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 17:57:12,870 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 [2020-10-23 17:57:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 17:57:12,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 17:57:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 17:57:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 17:57:12,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-10-23 17:57:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:12,871 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 17:57:12,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 17:57:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 17:57:12,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 17:57:13,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-23 17:57:13,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 17:57:13,270 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 274 [2020-10-23 18:00:56,105 WARN L193 SmtUtils]: Spent 3.71 m on a formula simplification. DAG size of input: 266 DAG size of output: 129 [2020-10-23 18:00:56,233 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-10-23 18:00:56,615 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 8 [2020-10-23 18:00:56,847 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2020-10-23 18:00:56,876 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:00:56,876 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:00:56,877 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:00:56,877 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:00:56,877 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:00:56,877 INFO L270 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|)) [2020-10-23 18:00:56,877 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:00:56,877 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:00:56,877 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:00:56,878 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:00:56,878 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:00:56,878 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 32 48) the Hoare annotation is: true [2020-10-23 18:00:56,878 INFO L274 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-10-23 18:00:56,878 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 32 48) no Hoare annotation was computed. [2020-10-23 18:00:56,878 INFO L270 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))) [2020-10-23 18:00:56,878 INFO L270 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))) [2020-10-23 18:00:56,878 INFO L270 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))) [2020-10-23 18:00:56,879 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= main_~x~0 63) (= main_~y~0 18) (<= 63 main_~x~0)) [2020-10-23 18:00:56,879 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 32 48) no Hoare annotation was computed. [2020-10-23 18:00:56,879 INFO L274 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-10-23 18:00:56,879 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-23 18:00:56,879 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-23 18:00:56,879 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-23 18:00:56,879 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-23 18:00:56,879 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-23 18:00:56,879 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-23 18:00:56,879 INFO L274 CegarLoopResult]: For program point gcd_testEXIT(lines 12 29) no Hoare annotation was computed. [2020-10-23 18:00:56,879 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-10-23 18:00:56,880 INFO L274 CegarLoopResult]: For program point L15-1(lines 13 29) no Hoare annotation was computed. [2020-10-23 18:00:56,880 INFO L277 CegarLoopResult]: At program point gcd_testENTRY(lines 12 29) the Hoare annotation is: true [2020-10-23 18:00:56,880 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-10-23 18:00:56,880 INFO L270 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (let ((.cse3 (+ gcd_test_~b gcd_test_~a)) (.cse4 (= (+ gcd_test_~a (* |gcd_test_#in~b| 3)) |gcd_test_#in~a|)) (.cse2 (* gcd_test_~b 3)) (.cse6 (< 0 gcd_test_~a)) (.cse0 (* |gcd_test_#in~a| 2)) (.cse1 (* |gcd_test_#in~b| (- 1))) (.cse5 (= gcd_test_~b |gcd_test_#in~b|))) (or (< |gcd_test_#in~b| (+ (div (+ .cse0 .cse1 (- 1)) 6) 1)) (and (= |gcd_test_#in~a| (+ .cse2 (* gcd_test_~a 4))) (<= |gcd_test_#in~b| .cse3) (<= (+ (div (+ (* gcd_test_~a (- 1)) |gcd_test_#in~a| (- 1)) 3) 1) |gcd_test_#in~b|)) (and (exists ((aux_div_v_gcd_test_~a_41_61 Int) (aux_mod_v_gcd_test_~a_41_61 Int)) (and (< aux_mod_v_gcd_test_~a_41_61 3) (<= |gcd_test_#in~a| (+ (* 3 aux_div_v_gcd_test_~a_41_61) aux_mod_v_gcd_test_~a_41_61 (* 2 gcd_test_~b) gcd_test_~a 1)) (<= 0 aux_mod_v_gcd_test_~a_41_61) (<= (+ gcd_test_~b (* 2 |gcd_test_#in~a|)) (+ (* 6 aux_div_v_gcd_test_~a_41_61) (* 2 aux_mod_v_gcd_test_~a_41_61) |gcd_test_#in~b| 2)) (<= (+ aux_div_v_gcd_test_~a_41_61 1) |gcd_test_#in~b|))) .cse4 (= (+ .cse2 (* gcd_test_~a 7)) |gcd_test_#in~a|)) (and .cse5 (= |gcd_test_#in~a| .cse3)) (exists ((aux_mod_gcd_test_~a_56 Int) (aux_div_gcd_test_~a_56 Int)) (and (< aux_mod_gcd_test_~a_56 3) (<= (* 3 |gcd_test_#in~a|) (+ (* 3 aux_mod_gcd_test_~a_56) (* 9 aux_div_gcd_test_~a_56) |gcd_test_#in~b| 3)) (<= 0 aux_mod_gcd_test_~a_56) (<= (+ aux_div_gcd_test_~a_56 1) |gcd_test_#in~b|))) (exists ((aux_div_v_gcd_test_~a_41_61 Int) (aux_mod_v_gcd_test_~a_41_61 Int) (v_gcd_test_~b_27 Int)) (and (< aux_mod_v_gcd_test_~a_41_61 3) (<= |gcd_test_#in~a| (+ (* 3 aux_div_v_gcd_test_~a_41_61) aux_mod_v_gcd_test_~a_41_61 (* 3 v_gcd_test_~b_27) 1)) (<= (+ v_gcd_test_~b_27 (* 2 |gcd_test_#in~a|)) (+ (* 6 aux_div_v_gcd_test_~a_41_61) (* 2 aux_mod_v_gcd_test_~a_41_61) |gcd_test_#in~b| 2)) (<= 0 aux_mod_v_gcd_test_~a_41_61) (<= (+ aux_div_v_gcd_test_~a_41_61 1) |gcd_test_#in~b|))) (and .cse4 (= (+ .cse2 gcd_test_~a) |gcd_test_#in~a|)) (and (< (+ (div (+ gcd_test_~b .cse0 .cse1 (- 7)) 6) 1) |gcd_test_#in~b|) .cse6 (or (exists ((aux_mod_v_gcd_test_~a_46_61 Int) (aux_div_v_gcd_test_~a_46_61 Int) (v_gcd_test_~b_30 Int)) (and (<= 0 aux_mod_v_gcd_test_~a_46_61) (<= (+ aux_div_v_gcd_test_~a_46_61 1) |gcd_test_#in~b|) (<= (+ gcd_test_~b |gcd_test_#in~a|) (+ aux_mod_v_gcd_test_~a_46_61 (* 3 aux_div_v_gcd_test_~a_46_61) (* 4 v_gcd_test_~b_30) 1)) (< aux_mod_v_gcd_test_~a_46_61 3) (<= (+ v_gcd_test_~b_30 (* 2 |gcd_test_#in~a|)) (+ (* 2 aux_mod_v_gcd_test_~a_46_61) (* 6 aux_div_v_gcd_test_~a_46_61) |gcd_test_#in~b| 2)))) (= (mod (+ gcd_test_~b |gcd_test_#in~a| |gcd_test_#in~b|) 2) 0) (not (= gcd_test_~b 0)))) (and .cse5 (<= gcd_test_~a |gcd_test_#in~a|) (<= |gcd_test_#in~a| gcd_test_~a)) (and .cse6 (< (+ (div (+ gcd_test_~b gcd_test_~a .cse0 .cse1 (- 13)) 6) 2) |gcd_test_#in~b|)) (and (= |gcd_test_#in~a| (+ (* gcd_test_~b 2) gcd_test_~a)) .cse5))) [2020-10-23 18:00:56,880 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-23 18:00:56,880 INFO L274 CegarLoopResult]: For program point L14-2(lines 13 29) no Hoare annotation was computed. [2020-10-23 18:00:56,880 INFO L274 CegarLoopResult]: For program point gcd_testFINAL(lines 12 29) no Hoare annotation was computed. [2020-10-23 18:00:56,892 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,893 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,893 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,893 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,896 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,896 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,896 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,896 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] [2020-10-23 18:00:56,896 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] [2020-10-23 18:00:56,897 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,897 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,897 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,897 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,897 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,898 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,898 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,898 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,898 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2020-10-23 18:00:56,898 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2020-10-23 18:00:56,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,910 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,910 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,911 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,911 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,911 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,911 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,911 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,912 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,912 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,912 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,912 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,912 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,913 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,913 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,913 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,913 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] [2020-10-23 18:00:56,913 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] [2020-10-23 18:00:56,914 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,914 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,914 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,914 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,914 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,915 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,915 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,915 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,915 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2020-10-23 18:00:56,915 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,916 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2020-10-23 18:00:56,916 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,916 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:00:56 BoogieIcfgContainer [2020-10-23 18:00:56,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:00:56,923 INFO L168 Benchmark]: Toolchain (without parser) took 277377.11 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 135.5 MB in the beginning and 102.3 MB in the end (delta: 33.2 MB). Peak memory consumption was 103.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:00:56,924 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:00:56,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.76 ms. Allocated memory is still 159.4 MB. Free memory was 134.9 MB in the beginning and 125.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:00:56,925 INFO L168 Benchmark]: Boogie Preprocessor took 38.80 ms. Allocated memory is still 159.4 MB. Free memory was 125.5 MB in the beginning and 124.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:00:56,925 INFO L168 Benchmark]: RCFGBuilder took 502.32 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 143.3 MB in the end (delta: -19.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:00:56,926 INFO L168 Benchmark]: TraceAbstraction took 276581.48 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 143.2 MB in the beginning and 102.3 MB in the end (delta: 40.9 MB). Peak memory consumption was 110.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:00:56,928 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 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.76 ms. Allocated memory is still 159.4 MB. Free memory was 134.9 MB in the beginning and 125.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.80 ms. Allocated memory is still 159.4 MB. Free memory was 125.5 MB in the beginning and 124.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 502.32 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 143.3 MB in the end (delta: -19.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 276581.48 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 143.2 MB in the beginning and 102.3 MB in the end (delta: 40.9 MB). Peak memory consumption was 110.1 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_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,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 [2020-10-23 18:00:56,936 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,938 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,938 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,938 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,938 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,938 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,939 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,939 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,939 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,939 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,939 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,939 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] [2020-10-23 18:00:56,939 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] [2020-10-23 18:00:56,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,941 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,941 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,941 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2020-10-23 18:00:56,941 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,941 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2020-10-23 18:00:56,941 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,942 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,943 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,943 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,943 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_gcd_test_~a_56,QUANTIFIED] [2020-10-23 18:00:56,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,945 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,946 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,946 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] [2020-10-23 18:00:56,946 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_27,QUANTIFIED] [2020-10-23 18:00:56,946 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,946 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_41_61,QUANTIFIED] [2020-10-23 18:00:56,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,947 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,948 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2020-10-23 18:00:56,948 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,948 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2020-10-23 18:00:56,948 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_gcd_test_~a_46_61,QUANTIFIED] [2020-10-23 18:00:56,948 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_gcd_test_~a_46_61,QUANTIFIED] Derived loop invariant: (((((((((\old(b) < (\old(a) * 2 + \old(b) * -1 + -1) / 6 + 1 || ((\old(a) == b * 3 + a * 4 && \old(b) <= b + a) && (a * -1 + \old(a) + -1) / 3 + 1 <= \old(b))) || (((\exists aux_div_v_gcd_test_~a_41_61 : int, aux_mod_v_gcd_test_~a_41_61 : int :: (((aux_mod_v_gcd_test_~a_41_61 < 3 && \old(a) <= 3 * aux_div_v_gcd_test_~a_41_61 + aux_mod_v_gcd_test_~a_41_61 + 2 * b + a + 1) && 0 <= aux_mod_v_gcd_test_~a_41_61) && b + 2 * \old(a) <= 6 * aux_div_v_gcd_test_~a_41_61 + 2 * aux_mod_v_gcd_test_~a_41_61 + \old(b) + 2) && aux_div_v_gcd_test_~a_41_61 + 1 <= \old(b)) && a + \old(b) * 3 == \old(a)) && b * 3 + a * 7 == \old(a))) || (b == \old(b) && \old(a) == b + a)) || (\exists aux_mod_gcd_test_~a_56 : int, aux_div_gcd_test_~a_56 : int :: ((aux_mod_gcd_test_~a_56 < 3 && 3 * \old(a) <= 3 * aux_mod_gcd_test_~a_56 + 9 * aux_div_gcd_test_~a_56 + \old(b) + 3) && 0 <= aux_mod_gcd_test_~a_56) && aux_div_gcd_test_~a_56 + 1 <= \old(b))) || (\exists aux_div_v_gcd_test_~a_41_61 : int, aux_mod_v_gcd_test_~a_41_61 : int, v_gcd_test_~b_27 : int :: (((aux_mod_v_gcd_test_~a_41_61 < 3 && \old(a) <= 3 * aux_div_v_gcd_test_~a_41_61 + aux_mod_v_gcd_test_~a_41_61 + 3 * v_gcd_test_~b_27 + 1) && v_gcd_test_~b_27 + 2 * \old(a) <= 6 * aux_div_v_gcd_test_~a_41_61 + 2 * aux_mod_v_gcd_test_~a_41_61 + \old(b) + 2) && 0 <= aux_mod_v_gcd_test_~a_41_61) && aux_div_v_gcd_test_~a_41_61 + 1 <= \old(b))) || (a + \old(b) * 3 == \old(a) && b * 3 + a == \old(a))) || (((b + \old(a) * 2 + \old(b) * -1 + -7) / 6 + 1 < \old(b) && 0 < a) && (((\exists aux_mod_v_gcd_test_~a_46_61 : int, aux_div_v_gcd_test_~a_46_61 : int, v_gcd_test_~b_30 : int :: (((0 <= aux_mod_v_gcd_test_~a_46_61 && aux_div_v_gcd_test_~a_46_61 + 1 <= \old(b)) && b + \old(a) <= aux_mod_v_gcd_test_~a_46_61 + 3 * aux_div_v_gcd_test_~a_46_61 + 4 * v_gcd_test_~b_30 + 1) && aux_mod_v_gcd_test_~a_46_61 < 3) && v_gcd_test_~b_30 + 2 * \old(a) <= 2 * aux_mod_v_gcd_test_~a_46_61 + 6 * aux_div_v_gcd_test_~a_46_61 + \old(b) + 2) || (b + \old(a) + \old(b)) % 2 == 0) || !(b == 0)))) || ((b == \old(b) && a <= \old(a)) && \old(a) <= a)) || (0 < a && (b + a + \old(a) * 2 + \old(b) * -1 + -13) / 6 + 2 < \old(b))) || (\old(a) == b * 2 + a && b == \old(b)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 52.6s, OverallIterations: 17, TraceHistogramMax: 10, AutomataDifference: 41.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 223.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 400 SDtfs, 204 SDslu, 2241 SDs, 0 SdLazy, 2197 SolverSat, 70 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 30.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 520 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 13.4s 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, 161 NumberOfFragments, 406 HoareAnnotationTreeSize, 123 FomulaSimplifications, 2535 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 5380 FormulaSimplificationTreeSizeReductionInter, 223.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 516 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 499 ConstructedInterpolants, 26 QuantifiedInterpolants, 120379 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...