/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/nla-digbench-scaling/geo2-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:51:18,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:51:18,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:51:18,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:51:18,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:51:18,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:51:18,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:51:18,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:51:18,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:51:18,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:51:18,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:51:18,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:51:18,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:51:18,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:51:18,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:51:18,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:51:18,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:51:18,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:51:18,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:51:18,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:51:18,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:51:18,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:51:18,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:51:18,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:51:18,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 20:51:18,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 20:51:18,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 20:51:18,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 20:51:18,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 20:51:18,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 20:51:18,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 20:51:18,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 20:51:18,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 20:51:18,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 20:51:18,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 20:51:18,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 20:51:18,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 20:51:18,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 20:51:18,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:51:18,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:51:18,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:51:18,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:51:18,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:51:18,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:51:18,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:51:18,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:51:18,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:51:18,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:51:18,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:51:18,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:51:18,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:51:18,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:51:18,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:51:18,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:51:18,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:51:18,592 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:51:18,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:51:18,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:51:18,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:51:18,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:51:18,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:51:18,857 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:51:18,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c [2021-05-02 20:51:18,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105b10c54/e9fde70f7e234f6eb68bb8064eb1cf28/FLAG97ea9e95e [2021-05-02 20:51:19,263 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:51:19,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c [2021-05-02 20:51:19,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105b10c54/e9fde70f7e234f6eb68bb8064eb1cf28/FLAG97ea9e95e [2021-05-02 20:51:19,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105b10c54/e9fde70f7e234f6eb68bb8064eb1cf28 [2021-05-02 20:51:19,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:51:19,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:51:19,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:51:19,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:51:19,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:51:19,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebce877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19, skipping insertion in model container [2021-05-02 20:51:19,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:51:19,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:51:19,428 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c[525,538] [2021-05-02 20:51:19,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:51:19,445 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:51:19,453 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound5.c[525,538] [2021-05-02 20:51:19,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:51:19,474 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:51:19,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19 WrapperNode [2021-05-02 20:51:19,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:51:19,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:51:19,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:51:19,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:51:19,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:51:19,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:51:19,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:51:19,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:51:19,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:51:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:51:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:51:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:51:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:51:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:51:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:51:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:51:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:51:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:51:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:51:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 20:51:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:51:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:51:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:51:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:51:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:51:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:51:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:51:19,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:51:19,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:51:19,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:51:19,798 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 20:51:19,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:51:19 BoogieIcfgContainer [2021-05-02 20:51:19,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:51:19,800 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:51:19,800 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:51:19,800 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:51:19,802 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:51:19" (1/1) ... [2021-05-02 20:51:19,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:51:19 BasicIcfg [2021-05-02 20:51:19,829 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:51:19,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:51:19,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:51:19,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:51:19,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:51:19" (1/4) ... [2021-05-02 20:51:19,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74071cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:51:19, skipping insertion in model container [2021-05-02 20:51:19,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:51:19" (2/4) ... [2021-05-02 20:51:19,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74071cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:51:19, skipping insertion in model container [2021-05-02 20:51:19,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:51:19" (3/4) ... [2021-05-02 20:51:19,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74071cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:51:19, skipping insertion in model container [2021-05-02 20:51:19,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:51:19" (4/4) ... [2021-05-02 20:51:19,834 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound5.cJordan [2021-05-02 20:51:19,853 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:51:19,856 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:51:19,867 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:51:19,889 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:51:19,889 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:51:19,889 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:51:19,889 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:51:19,889 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:51:19,889 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:51:19,889 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:51:19,889 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:51:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 20:51:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 20:51:19,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:19,902 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:19,902 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1141493127, now seen corresponding path program 1 times [2021-05-02 20:51:19,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:19,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791250446] [2021-05-02 20:51:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:51:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:51:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:51:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:51:20,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:20,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791250446] [2021-05-02 20:51:20,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791250446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:51:20,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:51:20,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:51:20,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579385216] [2021-05-02 20:51:20,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:51:20,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:20,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:51:20,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:51:20,095 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:51:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:20,140 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-05-02 20:51:20,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:51:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 20:51:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:20,145 INFO L225 Difference]: With dead ends: 29 [2021-05-02 20:51:20,145 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 20:51:20,146 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:51:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 20:51:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 20:51:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 20:51:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 20:51:20,166 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-02 20:51:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:20,167 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 20:51:20,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:51:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 20:51:20,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 20:51:20,168 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:20,168 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:20,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:51:20,168 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:20,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1441395781, now seen corresponding path program 1 times [2021-05-02 20:51:20,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:20,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250670118] [2021-05-02 20:51:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:20,183 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:20,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000352347] [2021-05-02 20:51:20,184 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 20:51:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:20,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 20:51:20,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:20,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 20:51:20,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:20,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250670118] [2021-05-02 20:51:20,419 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:20,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000352347] [2021-05-02 20:51:20,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000352347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:51:20,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:51:20,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:51:20,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671422887] [2021-05-02 20:51:20,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:51:20,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:51:20,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:51:20,424 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:51:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:20,510 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 20:51:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:51:20,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 20:51:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:20,512 INFO L225 Difference]: With dead ends: 32 [2021-05-02 20:51:20,513 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 20:51:20,514 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:51:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 20:51:20,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-02 20:51:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:51:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-05-02 20:51:20,523 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2021-05-02 20:51:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:20,524 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-05-02 20:51:20,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:51:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-05-02 20:51:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-02 20:51:20,529 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:20,529 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:20,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:51:20,737 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:20,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:20,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2044378429, now seen corresponding path program 1 times [2021-05-02 20:51:20,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:20,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400247399] [2021-05-02 20:51:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:20,753 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:20,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971515342] [2021-05-02 20:51:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:51:20,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 20:51:20,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:20,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 20:51:20,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:20,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400247399] [2021-05-02 20:51:20,976 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:20,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971515342] [2021-05-02 20:51:20,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971515342] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:51:20,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:51:20,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:51:20,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558635739] [2021-05-02 20:51:20,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:51:20,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:20,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:51:20,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:51:20,978 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 20:51:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:21,058 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-05-02 20:51:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:51:21,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2021-05-02 20:51:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:21,059 INFO L225 Difference]: With dead ends: 39 [2021-05-02 20:51:21,059 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 20:51:21,060 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:51:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 20:51:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 20:51:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 20:51:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-05-02 20:51:21,063 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 30 [2021-05-02 20:51:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:21,063 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-05-02 20:51:21,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 20:51:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-05-02 20:51:21,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 20:51:21,064 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:21,064 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:21,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:21,281 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:21,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:21,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1793299131, now seen corresponding path program 2 times [2021-05-02 20:51:21,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:21,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355381988] [2021-05-02 20:51:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:21,292 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:21,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186588396] [2021-05-02 20:51:21,293 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 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 20:51:21,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:51:21,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:51:21,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 20:51:21,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:21,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:21,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:21,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:21,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:21,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:23,511 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 20:51:25,605 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 20:51:25,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 20:51:25,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:25,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355381988] [2021-05-02 20:51:25,770 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:25,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186588396] [2021-05-02 20:51:25,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186588396] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:51:25,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:51:25,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 20:51:25,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072469779] [2021-05-02 20:51:25,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 20:51:25,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:25,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 20:51:25,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:51:25,772 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 20:51:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:26,304 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-05-02 20:51:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:51:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2021-05-02 20:51:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:26,305 INFO L225 Difference]: With dead ends: 46 [2021-05-02 20:51:26,305 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 20:51:26,305 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4225.9ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-05-02 20:51:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 20:51:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-05-02 20:51:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:51:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-05-02 20:51:26,309 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 37 [2021-05-02 20:51:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:26,310 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-05-02 20:51:26,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 20:51:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-05-02 20:51:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-02 20:51:26,310 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:51:26,310 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:51:26,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:26,529 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:51:26,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:51:26,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1935793091, now seen corresponding path program 3 times [2021-05-02 20:51:26,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:51:26,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807456249] [2021-05-02 20:51:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:51:26,538 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:51:26,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118168941] [2021-05-02 20:51:26,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-05-02 20:51:26,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 20:51:26,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:51:26,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 20:51:26,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:51:27,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:27,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:27,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:51:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 20:51:27,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:51:27,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807456249] [2021-05-02 20:51:27,595 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:51:27,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118168941] [2021-05-02 20:51:27,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118168941] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:51:27,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:51:27,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:51:27,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881833690] [2021-05-02 20:51:27,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:51:27,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:51:27,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:51:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:51:27,615 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-02 20:51:52,781 WARN L205 SmtUtils]: Spent 19.03 s on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-05-02 20:51:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:51:54,811 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-05-02 20:51:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:51:54,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2021-05-02 20:51:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:51:54,812 INFO L225 Difference]: With dead ends: 46 [2021-05-02 20:51:54,812 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 20:51:54,812 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 19989.9ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:51:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 20:51:54,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 20:51:54,812 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 20:51:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 20:51:54,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-05-02 20:51:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:51:54,813 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 20:51:54,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-02 20:51:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 20:51:54,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 20:51:55,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:51:55,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:51:55 BasicIcfg [2021-05-02 20:51:55,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 20:51:55,028 INFO L168 Benchmark]: Toolchain (without parser) took 35740.40 ms. Allocated memory was 205.5 MB in the beginning and 264.2 MB in the end (delta: 58.7 MB). Free memory was 171.8 MB in the beginning and 222.9 MB in the end (delta: -51.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:51:55,028 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 205.5 MB. Free memory is still 188.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:51:55,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.90 ms. Allocated memory is still 205.5 MB. Free memory was 171.6 MB in the beginning and 162.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 20:51:55,029 INFO L168 Benchmark]: Boogie Preprocessor took 62.86 ms. Allocated memory is still 205.5 MB. Free memory was 162.0 MB in the beginning and 189.8 MB in the end (delta: -27.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2021-05-02 20:51:55,029 INFO L168 Benchmark]: RCFGBuilder took 259.76 ms. Allocated memory is still 205.5 MB. Free memory was 189.8 MB in the beginning and 175.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 20:51:55,029 INFO L168 Benchmark]: IcfgTransformer took 29.48 ms. Allocated memory is still 205.5 MB. Free memory was 175.4 MB in the beginning and 174.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:51:55,029 INFO L168 Benchmark]: TraceAbstraction took 35197.84 ms. Allocated memory was 205.5 MB in the beginning and 264.2 MB in the end (delta: 58.7 MB). Free memory was 173.7 MB in the beginning and 222.9 MB in the end (delta: -49.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:51:55,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 205.5 MB. Free memory is still 188.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 184.90 ms. Allocated memory is still 205.5 MB. Free memory was 171.6 MB in the beginning and 162.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.86 ms. Allocated memory is still 205.5 MB. Free memory was 162.0 MB in the beginning and 189.8 MB in the end (delta: -27.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 259.76 ms. Allocated memory is still 205.5 MB. Free memory was 189.8 MB in the beginning and 175.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 29.48 ms. Allocated memory is still 205.5 MB. Free memory was 175.4 MB in the beginning and 174.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 35197.84 ms. Allocated memory was 205.5 MB in the beginning and 264.2 MB in the end (delta: 58.7 MB). Free memory was 173.7 MB in the beginning and 222.9 MB in the end (delta: -49.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 35137.6ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 9.6ms, AutomataDifference: 27965.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 114 SDtfs, 83 SDslu, 457 SDs, 0 SdLazy, 287 SolverSat, 27 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8617.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 24371.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.2ms SsaConstructionTime, 131.1ms SatisfiabilityAnalysisTime, 5865.6ms InterpolantComputationTime, 157 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 653 SizeOfPredicates, 11 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 52/72 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...