/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/loops/string-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:43:07,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:43:07,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:43:07,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:43:07,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:43:07,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:43:07,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:43:07,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:43:07,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:43:07,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:43:07,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:43:07,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:43:07,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:43:07,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:43:07,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:43:07,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:43:07,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:43:07,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:43:07,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:43:07,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:43:07,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:43:07,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:43:07,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:43:07,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:43:07,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:43:07,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:43:07,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:43:07,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:43:07,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:43:07,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:43:07,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:43:07,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:43:07,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:43:07,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:43:07,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:43:07,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:43:07,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:43:07,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:43:07,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:07,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:07,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:07,164 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 18:43:07,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:07,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:07,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:07,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:07,222 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:07,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:07,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:07,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:07,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:07,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:07,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:07,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:07,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:07,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:07,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:07,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:07,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:07,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:07,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:07,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:07,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:07,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:07,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:07,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:07,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:07,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:07,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:07,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:07,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:07,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:07,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:07,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:07,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:07,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:07,674 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:07,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-1.i [2020-10-23 18:43:07,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0781dd5/eef68a1980f640fe8a8e2a2e27647ee0/FLAG8f954aa55 [2020-10-23 18:43:08,525 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:08,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-1.i [2020-10-23 18:43:08,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0781dd5/eef68a1980f640fe8a8e2a2e27647ee0/FLAG8f954aa55 [2020-10-23 18:43:08,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0781dd5/eef68a1980f640fe8a8e2a2e27647ee0 [2020-10-23 18:43:08,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:08,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:08,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:08,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:08,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:08,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:08" (1/1) ... [2020-10-23 18:43:08,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d796c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:08, skipping insertion in model container [2020-10-23 18:43:08,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:08" (1/1) ... [2020-10-23 18:43:08,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:08,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:09,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:09,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:09,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:09,150 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:09,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09 WrapperNode [2020-10-23 18:43:09,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:09,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:09,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:09,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:09,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (1/1) ... [2020-10-23 18:43:09,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (1/1) ... [2020-10-23 18:43:09,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (1/1) ... [2020-10-23 18:43:09,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (1/1) ... [2020-10-23 18:43:09,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (1/1) ... [2020-10-23 18:43:09,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (1/1) ... [2020-10-23 18:43:09,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (1/1) ... [2020-10-23 18:43:09,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:09,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:09,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:09,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:09,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (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 18:43:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:43:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:43:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:43:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-23 18:43:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:09,836 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:09,837 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 18:43:09,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:09 BoogieIcfgContainer [2020-10-23 18:43:09,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:09,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:09,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:09,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:09,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:08" (1/3) ... [2020-10-23 18:43:09,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e3ceda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:09, skipping insertion in model container [2020-10-23 18:43:09,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:09" (2/3) ... [2020-10-23 18:43:09,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e3ceda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:09, skipping insertion in model container [2020-10-23 18:43:09,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:09" (3/3) ... [2020-10-23 18:43:09,849 INFO L111 eAbstractionObserver]: Analyzing ICFG string-1.i [2020-10-23 18:43:09,862 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:09,867 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:09,882 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:09,913 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:09,914 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:09,914 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:09,914 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:09,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:09,914 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:09,915 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:09,915 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-23 18:43:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:43:09,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:09,943 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, 1] [2020-10-23 18:43:09,943 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:09,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1881354354, now seen corresponding path program 1 times [2020-10-23 18:43:09,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:09,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26819460] [2020-10-23 18:43:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:10,239 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 18:43:10,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26819460] [2020-10-23 18:43:10,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:10,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:43:10,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306308455] [2020-10-23 18:43:10,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:43:10,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:10,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:43:10,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:43:10,272 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-10-23 18:43:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:10,473 INFO L93 Difference]: Finished difference Result 80 states and 119 transitions. [2020-10-23 18:43:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:43:10,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-23 18:43:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:10,488 INFO L225 Difference]: With dead ends: 80 [2020-10-23 18:43:10,489 INFO L226 Difference]: Without dead ends: 38 [2020-10-23 18:43:10,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:43:10,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-23 18:43:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-10-23 18:43:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 18:43:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-23 18:43:10,545 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 24 [2020-10-23 18:43:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:10,545 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-23 18:43:10,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:43:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-23 18:43:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 18:43:10,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:10,547 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:10,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:43:10,548 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash -607743226, now seen corresponding path program 1 times [2020-10-23 18:43:10,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:10,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119002756] [2020-10-23 18:43:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:43:10,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119002756] [2020-10-23 18:43:10,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677293746] [2020-10-23 18:43:10,665 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 18:43:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:10,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-23 18:43:10,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:43:10,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:43:10,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-23 18:43:10,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112817328] [2020-10-23 18:43:10,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:43:10,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:10,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:43:10,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:10,838 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2020-10-23 18:43:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:10,993 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-10-23 18:43:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:43:10,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-23 18:43:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:10,996 INFO L225 Difference]: With dead ends: 69 [2020-10-23 18:43:10,996 INFO L226 Difference]: Without dead ends: 46 [2020-10-23 18:43:10,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-23 18:43:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2020-10-23 18:43:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 18:43:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-23 18:43:11,008 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 30 [2020-10-23 18:43:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:11,009 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-23 18:43:11,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:43:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-23 18:43:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-23 18:43:11,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:11,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:11,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:43:11,225 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash 726160326, now seen corresponding path program 2 times [2020-10-23 18:43:11,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:11,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651154046] [2020-10-23 18:43:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:43:11,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651154046] [2020-10-23 18:43:11,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970230237] [2020-10-23 18:43:11,439 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 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 18:43:11,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-23 18:43:11,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:43:11,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:43:11,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:11,568 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:43:11,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:43:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-23 18:43:11,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:43:11,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2020-10-23 18:43:11,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611963912] [2020-10-23 18:43:11,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:43:11,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:11,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:43:11,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:43:11,647 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2020-10-23 18:43:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:11,731 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-10-23 18:43:11,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:43:11,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-23 18:43:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:11,734 INFO L225 Difference]: With dead ends: 54 [2020-10-23 18:43:11,734 INFO L226 Difference]: Without dead ends: 38 [2020-10-23 18:43:11,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:43:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-23 18:43:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-23 18:43:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-23 18:43:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-23 18:43:11,743 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 34 [2020-10-23 18:43:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:11,744 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-23 18:43:11,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:43:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-23 18:43:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 18:43:11,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:11,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:11,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:11,960 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:11,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:11,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2117066849, now seen corresponding path program 1 times [2020-10-23 18:43:11,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:11,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524537375] [2020-10-23 18:43:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-23 18:43:12,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524537375] [2020-10-23 18:43:12,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198843516] [2020-10-23 18:43:12,056 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 18:43:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:12,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 18:43:12,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-23 18:43:12,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:43:12,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-23 18:43:12,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637098883] [2020-10-23 18:43:12,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:43:12,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:12,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:43:12,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:43:12,155 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2020-10-23 18:43:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:12,303 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2020-10-23 18:43:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:43:12,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-23 18:43:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:12,305 INFO L225 Difference]: With dead ends: 83 [2020-10-23 18:43:12,305 INFO L226 Difference]: Without dead ends: 56 [2020-10-23 18:43:12,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:43:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-23 18:43:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2020-10-23 18:43:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-23 18:43:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-23 18:43:12,313 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 36 [2020-10-23 18:43:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:12,314 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-23 18:43:12,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:43:12,314 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-23 18:43:12,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-23 18:43:12,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:12,316 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2020-10-23 18:43:12,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:12,531 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:12,533 INFO L82 PathProgramCache]: Analyzing trace with hash 909557793, now seen corresponding path program 2 times [2020-10-23 18:43:12,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:12,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160919953] [2020-10-23 18:43:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:12,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 18:43:12,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160919953] [2020-10-23 18:43:12,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959791090] [2020-10-23 18:43:12,621 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 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 18:43:12,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-23 18:43:12,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:43:12,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-23 18:43:12,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:12,711 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-10-23 18:43:12,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:43:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-23 18:43:12,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:43:12,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-10-23 18:43:12,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637809980] [2020-10-23 18:43:12,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:43:12,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:12,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:43:12,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:43:12,739 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 5 states. [2020-10-23 18:43:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:12,758 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-23 18:43:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:43:12,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-23 18:43:12,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:12,759 INFO L225 Difference]: With dead ends: 42 [2020-10-23 18:43:12,759 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:43:12,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:43:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:43:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:43:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:43:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:43:12,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-10-23 18:43:12,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:12,761 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:43:12,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:43:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:43:12,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:43:12,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:12,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:43:13,112 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:43:13,112 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:43:13,113 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:43:13,113 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:43:13,113 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:43:13,113 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:13,113 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:43:13,113 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:13,114 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:13,114 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:43:13,114 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:43:13,114 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:13,114 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-23 18:43:13,114 INFO L274 CegarLoopResult]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2020-10-23 18:43:13,114 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 15 17) no Hoare annotation was computed. [2020-10-23 18:43:13,114 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2020-10-23 18:43:13,114 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 28 72) no Hoare annotation was computed. [2020-10-23 18:43:13,115 INFO L270 CegarLoopResult]: At program point L69(line 69) the Hoare annotation is: (or (= 1 main_~found~0) (= 0 main_~found~0)) [2020-10-23 18:43:13,115 INFO L274 CegarLoopResult]: For program point L69-1(line 69) no Hoare annotation was computed. [2020-10-23 18:43:13,115 INFO L274 CegarLoopResult]: For program point L53-2(lines 53 65) no Hoare annotation was computed. [2020-10-23 18:43:13,115 INFO L274 CegarLoopResult]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2020-10-23 18:43:13,115 INFO L270 CegarLoopResult]: At program point L37-3(lines 37 38) the Hoare annotation is: (or (= 1 main_~found~0) (= 0 main_~found~0)) [2020-10-23 18:43:13,115 INFO L274 CegarLoopResult]: For program point L37-4(lines 37 38) no Hoare annotation was computed. [2020-10-23 18:43:13,115 INFO L274 CegarLoopResult]: For program point L33-2(lines 33 34) no Hoare annotation was computed. [2020-10-23 18:43:13,116 INFO L270 CegarLoopResult]: At program point L33-3(lines 33 34) the Hoare annotation is: (or (= 1 main_~found~0) (= 0 main_~found~0)) [2020-10-23 18:43:13,116 INFO L274 CegarLoopResult]: For program point L33-4(lines 33 34) no Hoare annotation was computed. [2020-10-23 18:43:13,116 INFO L274 CegarLoopResult]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2020-10-23 18:43:13,116 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 28 72) no Hoare annotation was computed. [2020-10-23 18:43:13,116 INFO L270 CegarLoopResult]: At program point L46-3(lines 46 47) the Hoare annotation is: (or (= 1 main_~found~0) (= 0 main_~found~0)) [2020-10-23 18:43:13,116 INFO L274 CegarLoopResult]: For program point L46-4(lines 29 72) no Hoare annotation was computed. [2020-10-23 18:43:13,116 INFO L274 CegarLoopResult]: For program point L42-1(lines 42 43) no Hoare annotation was computed. [2020-10-23 18:43:13,116 INFO L270 CegarLoopResult]: At program point L42-3(lines 42 43) the Hoare annotation is: (or (= 1 main_~found~0) (= 0 main_~found~0)) [2020-10-23 18:43:13,117 INFO L274 CegarLoopResult]: For program point L42-4(lines 42 43) no Hoare annotation was computed. [2020-10-23 18:43:13,117 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 28 72) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 18:43:13,117 INFO L274 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2020-10-23 18:43:13,117 INFO L270 CegarLoopResult]: At program point L55-2(lines 53 65) the Hoare annotation is: (or (= 1 main_~found~0) (= 0 main_~found~0) (and (<= 0 main_~j~0) (<= main_~nc_B~0 0))) [2020-10-23 18:43:13,117 INFO L274 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-10-23 18:43:13,117 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-23 18:43:13,118 INFO L274 CegarLoopResult]: For program point L19-2(lines 18 23) no Hoare annotation was computed. [2020-10-23 18:43:13,118 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 18 23) the Hoare annotation is: true [2020-10-23 18:43:13,118 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 18 23) no Hoare annotation was computed. [2020-10-23 18:43:13,118 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-23 18:43:13,118 INFO L274 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-23 18:43:13,118 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-23 18:43:13,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:13 BoogieIcfgContainer [2020-10-23 18:43:13,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:43:13,140 INFO L168 Benchmark]: Toolchain (without parser) took 4263.90 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 126.9 MB in the beginning and 168.3 MB in the end (delta: -41.4 MB). Peak memory consumption was 109.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:13,141 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:43:13,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.59 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:13,142 INFO L168 Benchmark]: Boogie Preprocessor took 44.37 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:13,143 INFO L168 Benchmark]: RCFGBuilder took 640.91 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 132.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:13,144 INFO L168 Benchmark]: TraceAbstraction took 3296.54 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 132.2 MB in the beginning and 168.3 MB in the end (delta: -36.0 MB). Peak memory consumption was 113.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:13,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.59 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.37 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 640.91 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 132.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3296.54 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 132.2 MB in the beginning and 168.3 MB in the end (delta: -36.0 MB). Peak memory consumption was 113.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 46]: Loop Invariant Derived loop invariant: 1 == found || 0 == found - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 == found || 0 == found - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 == found || 0 == found - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 == found || 0 == found - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: (1 == found || 0 == found) || (0 <= j && nc_B <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 147 SDtfs, 82 SDslu, 282 SDs, 0 SdLazy, 246 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, 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, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 27 PreInvPairs, 41 NumberOfFragments, 89 HoareAnnotationTreeSize, 27 FomulaSimplifications, 87 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 304 NumberOfCodeBlocks, 282 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 16849 SizeOfPredicates, 10 NumberOfNonLiveVariables, 545 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 57/80 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...