/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/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:22:00,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:22:00,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:22:01,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:22:01,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:22:01,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:22:01,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:22:01,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:22:01,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:22:01,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:22:01,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:22:01,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:22:01,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:22:01,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:22:01,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:22:01,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:22:01,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:22:01,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:22:01,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:22:01,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:22:01,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:22:01,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:22:01,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:22:01,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:22:01,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 17:22:01,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 17:22:01,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 17:22:01,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 17:22:01,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 17:22:01,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 17:22:01,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:22:01,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:22:01,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:22:01,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:22:01,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:22:01,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:22:01,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:22:01,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:22:01,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:22:01,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:22:01,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:22:01,105 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 [2021-02-19 17:22:01,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:22:01,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:22:01,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:22:01,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:22:01,143 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:22:01,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:22:01,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:22:01,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:22:01,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:22:01,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:22:01,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:22:01,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:22:01,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:22:01,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:22:01,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:22:01,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:22:01,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:22:01,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:22:01,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:22:01,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:22:01,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:22:01,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:22:01,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:22:01,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:22:01,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:22:01,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:22:01,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:22:01,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:22:01,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:22:01,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:22:01,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:22:01,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:22:01,648 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:22:01,649 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:22:01,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2021-02-19 17:22:01,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e3e184b/2d20a87188a84b04866c9fb222057999/FLAG80dc9ba9b [2021-02-19 17:22:02,476 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:22:02,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd01-1.c [2021-02-19 17:22:02,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e3e184b/2d20a87188a84b04866c9fb222057999/FLAG80dc9ba9b [2021-02-19 17:22:02,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e3e184b/2d20a87188a84b04866c9fb222057999 [2021-02-19 17:22:02,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:22:02,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:22:02,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:22:02,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:22:02,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:22:02,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:22:02" (1/1) ... [2021-02-19 17:22:02,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9785ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:02, skipping insertion in model container [2021-02-19 17:22:02,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:22:02" (1/1) ... [2021-02-19 17:22:02,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:22:02,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:22:03,169 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd01-1.c[1008,1021] [2021-02-19 17:22:03,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:22:03,185 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:22:03,210 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd01-1.c[1008,1021] [2021-02-19 17:22:03,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:22:03,236 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:22:03,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03 WrapperNode [2021-02-19 17:22:03,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:22:03,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:22:03,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:22:03,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:22:03,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (1/1) ... [2021-02-19 17:22:03,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (1/1) ... [2021-02-19 17:22:03,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (1/1) ... [2021-02-19 17:22:03,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (1/1) ... [2021-02-19 17:22:03,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (1/1) ... [2021-02-19 17:22:03,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (1/1) ... [2021-02-19 17:22:03,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (1/1) ... [2021-02-19 17:22:03,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:22:03,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:22:03,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:22:03,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:22:03,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (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 [2021-02-19 17:22:03,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:22:03,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:22:03,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:22:03,381 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-02-19 17:22:03,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:22:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:22:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:22:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:22:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:22:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:22:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-02-19 17:22:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:22:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:22:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:22:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:22:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:22:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:22:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:22:03,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:22:03,685 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 17:22:03,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:22:03 BoogieIcfgContainer [2021-02-19 17:22:03,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:22:03,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:22:03,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:22:03,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:22:03,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:22:02" (1/3) ... [2021-02-19 17:22:03,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597c932a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:22:03, skipping insertion in model container [2021-02-19 17:22:03,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:22:03" (2/3) ... [2021-02-19 17:22:03,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597c932a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:22:03, skipping insertion in model container [2021-02-19 17:22:03,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:22:03" (3/3) ... [2021-02-19 17:22:03,725 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2021-02-19 17:22:03,742 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:22:03,751 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:22:03,804 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:22:03,837 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:22:03,838 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:22:03,838 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:22:03,838 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:22:03,838 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:22:03,838 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:22:03,838 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:22:03,839 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:22:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-02-19 17:22:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 17:22:03,865 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:22:03,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:22:03,867 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:22:03,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:22:03,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1749454543, now seen corresponding path program 1 times [2021-02-19 17:22:03,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:22:03,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787008023] [2021-02-19 17:22:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:22:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:04,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:04,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:04,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:22:04,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:22:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:04,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:04,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-02-19 17:22:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:04,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:22:04,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:22:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:22:04,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787008023] [2021-02-19 17:22:04,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:22:04,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 17:22:04,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222810550] [2021-02-19 17:22:04,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 17:22:04,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:22:04,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 17:22:04,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:22:04,327 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2021-02-19 17:22:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:22:04,653 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-02-19 17:22:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 17:22:04,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-02-19 17:22:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:22:04,666 INFO L225 Difference]: With dead ends: 41 [2021-02-19 17:22:04,666 INFO L226 Difference]: Without dead ends: 25 [2021-02-19 17:22:04,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-19 17:22:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-02-19 17:22:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-02-19 17:22:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-19 17:22:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-02-19 17:22:04,724 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 16 [2021-02-19 17:22:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:22:04,725 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-02-19 17:22:04,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 17:22:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-02-19 17:22:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-19 17:22:04,728 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:22:04,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:22:04,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:22:04,729 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:22:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:22:04,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2120307351, now seen corresponding path program 1 times [2021-02-19 17:22:04,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:22:04,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316411858] [2021-02-19 17:22:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:22:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:04,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:04,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:04,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:04,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:04,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:22:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:04,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:04,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-02-19 17:22:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:04,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:04,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:04,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:04,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:22:04,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316411858] [2021-02-19 17:22:04,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:22:04,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 17:22:04,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107709122] [2021-02-19 17:22:04,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 17:22:04,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:22:04,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 17:22:04,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:22:04,912 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 7 states. [2021-02-19 17:22:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:22:05,160 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-02-19 17:22:05,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 17:22:05,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-02-19 17:22:05,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:22:05,163 INFO L225 Difference]: With dead ends: 31 [2021-02-19 17:22:05,163 INFO L226 Difference]: Without dead ends: 27 [2021-02-19 17:22:05,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-02-19 17:22:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-19 17:22:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-02-19 17:22:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-19 17:22:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-02-19 17:22:05,174 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 17 [2021-02-19 17:22:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:22:05,174 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-02-19 17:22:05,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 17:22:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-02-19 17:22:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 17:22:05,176 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:22:05,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:22:05,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:22:05,177 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:22:05,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:22:05,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1921119129, now seen corresponding path program 1 times [2021-02-19 17:22:05,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:22:05,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853941437] [2021-02-19 17:22:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:22:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:05,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:22:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:05,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-02-19 17:22:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:05,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:05,293 WARN L141 QuantifierPusher]: treesize reduction 10, result has 44.4 percent of original size [2021-02-19 17:22:05,294 WARN L147 QuantifierPusher]: treesize reduction 10, result has 44.4 percent of original size 8 [2021-02-19 17:22:05,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 17:22:05,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-19 17:22:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:05,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:22:05,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:22:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 17:22:05,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853941437] [2021-02-19 17:22:05,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:22:05,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 17:22:05,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73889412] [2021-02-19 17:22:05,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:22:05,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:22:05,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:22:05,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:22:05,352 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 8 states. [2021-02-19 17:22:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:22:05,655 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-02-19 17:22:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 17:22:05,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2021-02-19 17:22:05,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:22:05,658 INFO L225 Difference]: With dead ends: 37 [2021-02-19 17:22:05,658 INFO L226 Difference]: Without dead ends: 29 [2021-02-19 17:22:05,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-02-19 17:22:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-19 17:22:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-02-19 17:22:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-19 17:22:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-02-19 17:22:05,668 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 24 [2021-02-19 17:22:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:22:05,669 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-02-19 17:22:05,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 17:22:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-02-19 17:22:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 17:22:05,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:22:05,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:22:05,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:22:05,671 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:22:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:22:05,672 INFO L82 PathProgramCache]: Analyzing trace with hash -575359383, now seen corresponding path program 1 times [2021-02-19 17:22:05,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:22:05,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440244498] [2021-02-19 17:22:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:22:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:05,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:05,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:22:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:05,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-02-19 17:22:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:05,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:05,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 17:22:05,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:05,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-19 17:22:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:05,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:22:05,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:05,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:22:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 17:22:05,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440244498] [2021-02-19 17:22:05,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:22:05,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 17:22:05,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953086473] [2021-02-19 17:22:05,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:22:05,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:22:05,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:22:05,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:22:05,908 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 8 states. [2021-02-19 17:22:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:22:06,227 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-02-19 17:22:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 17:22:06,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2021-02-19 17:22:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:22:06,229 INFO L225 Difference]: With dead ends: 37 [2021-02-19 17:22:06,229 INFO L226 Difference]: Without dead ends: 27 [2021-02-19 17:22:06,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-02-19 17:22:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-19 17:22:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-02-19 17:22:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-19 17:22:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-02-19 17:22:06,237 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 24 [2021-02-19 17:22:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:22:06,238 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-02-19 17:22:06,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 17:22:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-02-19 17:22:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-19 17:22:06,239 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:22:06,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:22:06,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 17:22:06,240 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:22:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:22:06,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1225207111, now seen corresponding path program 1 times [2021-02-19 17:22:06,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:22:06,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589177759] [2021-02-19 17:22:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:22:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:06,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:22:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:06,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-02-19 17:22:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:06,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-19 17:22:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:06,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-19 17:22:06,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589177759] [2021-02-19 17:22:06,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:22:06,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 17:22:06,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215417548] [2021-02-19 17:22:06,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:22:06,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:22:06,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:22:06,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:22:06,378 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 8 states. [2021-02-19 17:22:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:22:06,672 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-02-19 17:22:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 17:22:06,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-02-19 17:22:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:22:06,674 INFO L225 Difference]: With dead ends: 32 [2021-02-19 17:22:06,674 INFO L226 Difference]: Without dead ends: 28 [2021-02-19 17:22:06,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-02-19 17:22:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-19 17:22:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-02-19 17:22:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-02-19 17:22:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-02-19 17:22:06,682 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 25 [2021-02-19 17:22:06,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:22:06,682 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-02-19 17:22:06,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 17:22:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-02-19 17:22:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-19 17:22:06,684 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:22:06,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:22:06,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 17:22:06,684 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:22:06,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:22:06,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1830908953, now seen corresponding path program 1 times [2021-02-19 17:22:06,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:22:06,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309031051] [2021-02-19 17:22:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:22:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:06,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:22:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:06,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-02-19 17:22:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:06,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-19 17:22:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:06,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:06,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:06,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-19 17:22:06,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309031051] [2021-02-19 17:22:06,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:22:06,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 17:22:06,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802220944] [2021-02-19 17:22:06,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:22:06,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:22:06,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:22:06,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:22:06,870 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2021-02-19 17:22:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:22:07,168 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-02-19 17:22:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 17:22:07,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-02-19 17:22:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:22:07,170 INFO L225 Difference]: With dead ends: 35 [2021-02-19 17:22:07,170 INFO L226 Difference]: Without dead ends: 31 [2021-02-19 17:22:07,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-02-19 17:22:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-19 17:22:07,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-19 17:22:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-19 17:22:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-02-19 17:22:07,178 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2021-02-19 17:22:07,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:22:07,179 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-02-19 17:22:07,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 17:22:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-02-19 17:22:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 17:22:07,181 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:22:07,181 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:22:07,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-19 17:22:07,181 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:22:07,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:22:07,182 INFO L82 PathProgramCache]: Analyzing trace with hash -766699319, now seen corresponding path program 1 times [2021-02-19 17:22:07,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:22:07,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50716739] [2021-02-19 17:22:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:22:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:07,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:07,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:22:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:07,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:07,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-02-19 17:22:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:07,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:07,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-19 17:22:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:07,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:07,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-19 17:22:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:22:07,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:22:07,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:22:07,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:22:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-02-19 17:22:07,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50716739] [2021-02-19 17:22:07,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:22:07,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 17:22:07,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603001955] [2021-02-19 17:22:07,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 17:22:07,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:22:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 17:22:07,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-19 17:22:07,330 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 9 states. [2021-02-19 17:22:07,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:22:07,637 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-02-19 17:22:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 17:22:07,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2021-02-19 17:22:07,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:22:07,638 INFO L225 Difference]: With dead ends: 31 [2021-02-19 17:22:07,638 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 17:22:07,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-02-19 17:22:07,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 17:22:07,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 17:22:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-19 17:22:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 17:22:07,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-02-19 17:22:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:22:07,640 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 17:22:07,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-19 17:22:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 17:22:07,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 17:22:07,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-19 17:22:07,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 17:22:07,806 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-19 17:22:07,806 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-19 17:22:07,807 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-19 17:22:07,807 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:22:07,807 INFO L185 CegarLoopUtils]: 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|)) [2021-02-19 17:22:07,808 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:22:07,808 INFO L189 CegarLoopUtils]: For program point gcdFINAL(lines 17 28) no Hoare annotation was computed. [2021-02-19 17:22:07,808 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1)) [2021-02-19 17:22:07,808 INFO L189 CegarLoopUtils]: For program point gcdEXIT(lines 17 28) no Hoare annotation was computed. [2021-02-19 17:22:07,808 INFO L189 CegarLoopUtils]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-02-19 17:22:07,808 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (= gcd_~y2 |gcd_#in~y2|) (= gcd_~y1 |gcd_#in~y1|)) [2021-02-19 17:22:07,809 INFO L189 CegarLoopUtils]: For program point L24(lines 24 26) no Hoare annotation was computed. [2021-02-19 17:22:07,809 INFO L189 CegarLoopUtils]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-02-19 17:22:07,809 INFO L192 CegarLoopUtils]: At program point gcdENTRY(lines 17 28) the Hoare annotation is: true [2021-02-19 17:22:07,809 INFO L189 CegarLoopUtils]: For program point L21(lines 21 23) no Hoare annotation was computed. [2021-02-19 17:22:07,809 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-19 17:22:07,809 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:22:07,809 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-19 17:22:07,809 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-19 17:22:07,809 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:22:07,810 INFO L189 CegarLoopUtils]: For program point L32(lines 32 34) no Hoare annotation was computed. [2021-02-19 17:22:07,810 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2021-02-19 17:22:07,810 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 30 45) the Hoare annotation is: true [2021-02-19 17:22:07,810 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 30 45) no Hoare annotation was computed. [2021-02-19 17:22:07,810 INFO L189 CegarLoopUtils]: For program point L41(line 41) no Hoare annotation was computed. [2021-02-19 17:22:07,810 INFO L189 CegarLoopUtils]: For program point L40(lines 40 44) no Hoare annotation was computed. [2021-02-19 17:22:07,810 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= 1 main_~n~0) (<= 1 main_~m~0)) [2021-02-19 17:22:07,811 INFO L189 CegarLoopUtils]: For program point L40-1(lines 30 45) no Hoare annotation was computed. [2021-02-19 17:22:07,811 INFO L189 CegarLoopUtils]: For program point L39-1(line 39) no Hoare annotation was computed. [2021-02-19 17:22:07,811 INFO L189 CegarLoopUtils]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-02-19 17:22:07,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:22:07 BoogieIcfgContainer [2021-02-19 17:22:07,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:22:07,818 INFO L168 Benchmark]: Toolchain (without parser) took 4945.30 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.9 MB in the beginning and 62.7 MB in the end (delta: 64.2 MB). Peak memory consumption was 94.9 MB. Max. memory is 8.0 GB. [2021-02-19 17:22:07,819 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:22:07,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:22:07,820 INFO L168 Benchmark]: Boogie Preprocessor took 36.01 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:22:07,820 INFO L168 Benchmark]: RCFGBuilder took 412.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 100.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:22:07,821 INFO L168 Benchmark]: TraceAbstraction took 4127.67 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.1 MB in the beginning and 62.7 MB in the end (delta: 37.5 MB). Peak memory consumption was 68.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:22:07,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.01 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 412.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 100.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4127.67 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.1 MB in the beginning and 62.7 MB in the end (delta: 37.5 MB). Peak memory consumption was 68.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 205 SDslu, 211 SDs, 0 SdLazy, 634 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 72 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 160 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 12324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 34/34 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! Received shutdown request...