/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:09:34,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:09:34,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:09:34,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:09:34,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:09:34,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:09:34,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:09:34,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:09:34,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:09:34,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:09:34,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:09:34,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:09:34,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:09:34,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:09:34,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:09:34,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:09:34,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:09:34,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:09:34,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:09:34,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:09:34,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:09:34,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:09:34,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:09:34,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:09:34,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 18:09:34,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 18:09:34,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 18:09:34,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 18:09:34,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 18:09:34,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 18:09:34,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 18:09:34,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 18:09:34,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 18:09:34,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 18:09:34,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 18:09:34,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 18:09:34,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 18:09:34,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 18:09:34,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:09:34,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:09:34,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:09:34,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:09:34,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:09:34,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:09:34,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:09:34,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:09:34,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:09:34,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:09:34,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:09:34,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:09:34,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:09:34,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:09:34,834 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:09:34,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:09:34,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:09:34,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:09:34,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:09:34,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:09:34,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:09:34,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:09:34,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:09:34,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:09:34,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:09:34,836 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:09:34,837 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:09:35,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:09:35,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:09:35,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:09:35,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:09:35,162 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:09:35,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007.i [2021-05-02 18:09:35,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e86798e8/206cb06388d8445cb5e2af451ee36784/FLAGe260482db [2021-05-02 18:09:35,696 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:09:35,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i [2021-05-02 18:09:35,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e86798e8/206cb06388d8445cb5e2af451ee36784/FLAGe260482db [2021-05-02 18:09:35,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e86798e8/206cb06388d8445cb5e2af451ee36784 [2021-05-02 18:09:35,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:09:35,731 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:09:35,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:09:35,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:09:35,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:09:35,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f15403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35, skipping insertion in model container [2021-05-02 18:09:35,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:09:35,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:09:35,857 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i[895,908] [2021-05-02 18:09:35,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:09:35,872 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:09:35,898 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i[895,908] [2021-05-02 18:09:35,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:09:35,926 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:09:35,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35 WrapperNode [2021-05-02 18:09:35,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:09:35,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:09:35,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:09:35,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:09:35,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (1/1) ... [2021-05-02 18:09:35,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:09:35,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:09:35,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:09:35,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:09:35,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (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 [2021-05-02 18:09:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:09:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:09:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:09:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:09:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:09:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:09:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:09:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:09:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:09:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:09:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:09:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:09:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:09:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:09:36,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:09:36,222 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:09:36,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:09:36 BoogieIcfgContainer [2021-05-02 18:09:36,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:09:36,224 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:09:36,224 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:09:36,224 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:09:36,228 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:09:36" (1/1) ... [2021-05-02 18:09:36,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:09:36 BasicIcfg [2021-05-02 18:09:36,243 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:09:36,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:09:36,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:09:36,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:09:36,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:09:35" (1/4) ... [2021-05-02 18:09:36,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d354901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:09:36, skipping insertion in model container [2021-05-02 18:09:36,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:35" (2/4) ... [2021-05-02 18:09:36,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d354901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:09:36, skipping insertion in model container [2021-05-02 18:09:36,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:09:36" (3/4) ... [2021-05-02 18:09:36,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d354901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:09:36, skipping insertion in model container [2021-05-02 18:09:36,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:09:36" (4/4) ... [2021-05-02 18:09:36,250 INFO L111 eAbstractionObserver]: Analyzing ICFG bhmr2007.iJordan [2021-05-02 18:09:36,254 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:09:36,268 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:09:36,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:09:36,296 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:09:36,296 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:09:36,296 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:09:36,296 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:09:36,296 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:09:36,296 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:09:36,297 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:09:36,297 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:09:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:09:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:09:36,312 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:09:36,313 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:09:36,313 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:09:36,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:09:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1670666048, now seen corresponding path program 1 times [2021-05-02 18:09:36,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:09:36,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979355824] [2021-05-02 18:09:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:09:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:09:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:36,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:09:36,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979355824] [2021-05-02 18:09:36,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979355824] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:09:36,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:09:36,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:09:36,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317766828] [2021-05-02 18:09:36,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:09:36,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:09:36,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:09:36,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:09:36,637 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:09:36,687 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 18:09:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:09:36,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 18:09:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:09:36,696 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:09:36,697 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 18:09:36,698 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:09:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 18:09:36,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 18:09:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 18:09:36,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-02 18:09:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:09:36,723 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 18:09:36,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 18:09:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:09:36,724 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:09:36,724 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:09:36,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:09:36,725 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:09:36,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:09:36,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1671589569, now seen corresponding path program 1 times [2021-05-02 18:09:36,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:09:36,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071523578] [2021-05-02 18:09:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:09:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:36,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:09:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:37,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:09:37,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071523578] [2021-05-02 18:09:37,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071523578] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:09:37,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:09:37,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 18:09:37,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005800687] [2021-05-02 18:09:37,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:09:37,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:09:37,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:09:37,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:09:37,011 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:37,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:09:37,219 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-05-02 18:09:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:09:37,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 18:09:37,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:09:37,221 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:09:37,221 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:09:37,222 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 257.0ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:09:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:09:37,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-02 18:09:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-05-02 18:09:37,226 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2021-05-02 18:09:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:09:37,226 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-05-02 18:09:37,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-05-02 18:09:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:09:37,227 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:09:37,227 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:09:37,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:09:37,227 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:09:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:09:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash 830449136, now seen corresponding path program 1 times [2021-05-02 18:09:37,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:09:37,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400177475] [2021-05-02 18:09:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:09:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:37,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:09:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:37,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:09:37,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400177475] [2021-05-02 18:09:37,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400177475] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:09:37,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733926824] [2021-05-02 18:09:37,384 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 [2021-05-02 18:09:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:37,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:09:37,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:09:37,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:37,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:37,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:37,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:37,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733926824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:09:37,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:09:37,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-05-02 18:09:37,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347330485] [2021-05-02 18:09:37,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:09:37,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:09:37,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:09:37,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:09:37,716 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:09:38,149 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-05-02 18:09:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:09:38,150 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 18:09:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:09:38,151 INFO L225 Difference]: With dead ends: 27 [2021-05-02 18:09:38,151 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 18:09:38,152 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 504.4ms TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:09:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 18:09:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-05-02 18:09:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 18:09:38,158 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-05-02 18:09:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:09:38,159 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 18:09:38,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:38,159 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 18:09:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 18:09:38,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:09:38,161 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:09:38,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 18:09:38,375 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:09:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:09:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash -744985503, now seen corresponding path program 2 times [2021-05-02 18:09:38,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:09:38,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380361466] [2021-05-02 18:09:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:09:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:09:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:38,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:09:38,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380361466] [2021-05-02 18:09:38,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380361466] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:09:38,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474881016] [2021-05-02 18:09:38,572 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 [2021-05-02 18:09:38,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:09:38,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:09:38,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:09:38,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:09:38,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:38,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:38,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:38,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:38,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474881016] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:09:38,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:09:38,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-05-02 18:09:38,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015429741] [2021-05-02 18:09:38,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 18:09:38,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:09:38,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 18:09:38,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:09:38,871 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:39,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:09:39,759 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-05-02 18:09:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:09:39,760 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-05-02 18:09:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:09:39,761 INFO L225 Difference]: With dead ends: 33 [2021-05-02 18:09:39,761 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 18:09:39,762 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 953.1ms TimeCoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:09:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 18:09:39,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-05-02 18:09:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-05-02 18:09:39,765 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2021-05-02 18:09:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:09:39,765 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-05-02 18:09:39,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-05-02 18:09:39,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:09:39,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:09:39,766 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:09:39,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:09:39,990 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:09:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:09:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash 687781231, now seen corresponding path program 1 times [2021-05-02 18:09:39,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:09:39,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516405048] [2021-05-02 18:09:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:09:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:40,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:09:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:09:40,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:09:40,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516405048] [2021-05-02 18:09:40,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516405048] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:09:40,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572569267] [2021-05-02 18:09:40,200 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 [2021-05-02 18:09:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:40,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:09:40,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:09:40,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:40,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:40,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:40,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:40,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572569267] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:09:40,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:09:40,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-05-02 18:09:40,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597149648] [2021-05-02 18:09:40,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:09:40,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:09:40,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:09:40,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:09:40,533 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 23 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:09:41,509 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-05-02 18:09:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:09:41,510 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 18:09:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:09:41,510 INFO L225 Difference]: With dead ends: 31 [2021-05-02 18:09:41,510 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:09:41,511 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1101.9ms TimeCoverageRelationStatistics Valid=230, Invalid=1576, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:09:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:09:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:09:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 18:09:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:09:41,511 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-05-02 18:09:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:09:41,511 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:09:41,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:09:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:09:41,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:09:41,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:09:41,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:09:41 BasicIcfg [2021-05-02 18:09:41,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:09:41,716 INFO L168 Benchmark]: Toolchain (without parser) took 5985.39 ms. Allocated memory was 206.6 MB in the beginning and 300.9 MB in the end (delta: 94.4 MB). Free memory was 171.6 MB in the beginning and 188.1 MB in the end (delta: -16.5 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. [2021-05-02 18:09:41,717 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 206.6 MB. Free memory is still 188.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:09:41,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.58 ms. Allocated memory is still 206.6 MB. Free memory was 171.4 MB in the beginning and 189.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:09:41,717 INFO L168 Benchmark]: Boogie Preprocessor took 21.98 ms. Allocated memory is still 206.6 MB. Free memory was 189.6 MB in the beginning and 188.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:09:41,717 INFO L168 Benchmark]: RCFGBuilder took 272.45 ms. Allocated memory is still 206.6 MB. Free memory was 188.2 MB in the beginning and 173.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:09:41,717 INFO L168 Benchmark]: IcfgTransformer took 19.51 ms. Allocated memory is still 206.6 MB. Free memory was 173.9 MB in the beginning and 172.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:09:41,717 INFO L168 Benchmark]: TraceAbstraction took 5471.58 ms. Allocated memory was 206.6 MB in the beginning and 300.9 MB in the end (delta: 94.4 MB). Free memory was 171.8 MB in the beginning and 188.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB. [2021-05-02 18:09:41,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 206.6 MB. Free memory is still 188.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 192.58 ms. Allocated memory is still 206.6 MB. Free memory was 171.4 MB in the beginning and 189.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.98 ms. Allocated memory is still 206.6 MB. Free memory was 189.6 MB in the beginning and 188.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 272.45 ms. Allocated memory is still 206.6 MB. Free memory was 188.2 MB in the beginning and 173.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 19.51 ms. Allocated memory is still 206.6 MB. Free memory was 173.9 MB in the beginning and 172.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5471.58 ms. Allocated memory was 206.6 MB in the beginning and 300.9 MB in the end (delta: 94.4 MB). Free memory was 171.8 MB in the beginning and 188.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5418.9ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 11.3ms, AutomataDifference: 2599.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 57 SDtfs, 109 SDslu, 161 SDs, 0 SdLazy, 580 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 408.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 2865.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.0ms SsaConstructionTime, 162.7ms SatisfiabilityAnalysisTime, 1661.7ms InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 1025 SizeOfPredicates, 6 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/36 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...