/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/mannadiv_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 09:52:52,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 09:52:52,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 09:52:52,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 09:52:52,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 09:52:52,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 09:52:52,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 09:52:52,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 09:52:52,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 09:52:52,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 09:52:52,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 09:52:52,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 09:52:52,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 09:52:52,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 09:52:52,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 09:52:52,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 09:52:52,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 09:52:52,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 09:52:52,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 09:52:52,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 09:52:52,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 09:52:52,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 09:52:52,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 09:52:52,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 09:52:52,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 09:52:52,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 09:52:52,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 09:52:52,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 09:52:52,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 09:52:52,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 09:52:52,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 09:52:52,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 09:52:52,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 09:52:52,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 09:52:52,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 09:52:52,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 09:52:52,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 09:52:52,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 09:52:52,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 09:52:52,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 09:52:52,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 09:52:52,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 09:52:52,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 09:52:52,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 09:52:52,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 09:52:52,431 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 09:52:52,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 09:52:52,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 09:52:52,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 09:52:52,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 09:52:52,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 09:52:52,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 09:52:52,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 09:52:52,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 09:52:52,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 09:52:52,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 09:52:52,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 09:52:52,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 09:52:52,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 09:52:52,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 09:52:52,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 09:52:52,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 09:52:52,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 09:52:52,434 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 09:52:52,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 09:52:52,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 09:52:52,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 09:52:52,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 09:52:52,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 09:52:52,757 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 09:52:52,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound1.c [2021-05-06 09:52:52,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39536cfb4/b0f68167803347a7b877c48414d5cee8/FLAG9db90114a [2021-05-06 09:52:53,294 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 09:52:53,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound1.c [2021-05-06 09:52:53,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39536cfb4/b0f68167803347a7b877c48414d5cee8/FLAG9db90114a [2021-05-06 09:52:53,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39536cfb4/b0f68167803347a7b877c48414d5cee8 [2021-05-06 09:52:53,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 09:52:53,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 09:52:53,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 09:52:53,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 09:52:53,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 09:52:53,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 09:52:53" (1/1) ... [2021-05-06 09:52:53,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23251c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:53, skipping insertion in model container [2021-05-06 09:52:53,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 09:52:53" (1/1) ... [2021-05-06 09:52:53,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 09:52:53,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 09:52:53,980 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/mannadiv_valuebound1.c[573,586] [2021-05-06 09:52:53,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 09:52:54,005 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 09:52:54,015 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/mannadiv_valuebound1.c[573,586] [2021-05-06 09:52:54,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 09:52:54,039 INFO L208 MainTranslator]: Completed translation [2021-05-06 09:52:54,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54 WrapperNode [2021-05-06 09:52:54,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 09:52:54,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 09:52:54,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 09:52:54,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 09:52:54,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (1/1) ... [2021-05-06 09:52:54,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (1/1) ... [2021-05-06 09:52:54,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (1/1) ... [2021-05-06 09:52:54,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (1/1) ... [2021-05-06 09:52:54,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (1/1) ... [2021-05-06 09:52:54,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (1/1) ... [2021-05-06 09:52:54,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (1/1) ... [2021-05-06 09:52:54,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 09:52:54,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 09:52:54,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 09:52:54,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 09:52:54,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (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 [2021-05-06 09:52:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 09:52:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 09:52:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 09:52:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 09:52:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 09:52:54,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 09:52:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 09:52:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 09:52:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 09:52:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 09:52:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 09:52:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 09:52:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 09:52:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 09:52:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 09:52:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 09:52:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 09:52:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 09:52:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 09:52:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 09:52:54,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 09:52:54,530 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 09:52:54,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:52:54 BoogieIcfgContainer [2021-05-06 09:52:54,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 09:52:54,532 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 09:52:54,532 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 09:52:54,533 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 09:52:54,535 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:52:54" (1/1) ... [2021-05-06 09:52:54,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 09:52:54 BasicIcfg [2021-05-06 09:52:54,559 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 09:52:54,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 09:52:54,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 09:52:54,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 09:52:54,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 09:52:53" (1/4) ... [2021-05-06 09:52:54,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293e73b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 09:52:54, skipping insertion in model container [2021-05-06 09:52:54,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 09:52:54" (2/4) ... [2021-05-06 09:52:54,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293e73b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 09:52:54, skipping insertion in model container [2021-05-06 09:52:54,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 09:52:54" (3/4) ... [2021-05-06 09:52:54,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293e73b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 09:52:54, skipping insertion in model container [2021-05-06 09:52:54,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 09:52:54" (4/4) ... [2021-05-06 09:52:54,567 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound1.cJordan [2021-05-06 09:52:54,571 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 09:52:54,575 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 09:52:54,589 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 09:52:54,611 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 09:52:54,612 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 09:52:54,612 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 09:52:54,612 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 09:52:54,612 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 09:52:54,612 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 09:52:54,612 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 09:52:54,612 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 09:52:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-05-06 09:52:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 09:52:54,631 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:54,631 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:54,632 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:54,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:54,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1058806997, now seen corresponding path program 1 times [2021-05-06 09:52:54,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:54,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579673452] [2021-05-06 09:52:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 09:52:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:54,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 09:52:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:54,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 09:52:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:54,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:54,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579673452] [2021-05-06 09:52:54,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579673452] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:52:54,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:52:54,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 09:52:54,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985262413] [2021-05-06 09:52:54,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 09:52:54,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:54,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 09:52:54,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 09:52:54,888 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 09:52:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:54,946 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-05-06 09:52:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 09:52:54,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-05-06 09:52:54,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:54,953 INFO L225 Difference]: With dead ends: 29 [2021-05-06 09:52:54,954 INFO L226 Difference]: Without dead ends: 24 [2021-05-06 09:52:54,955 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 09:52:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-06 09:52:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-06 09:52:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2021-05-06 09:52:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-05-06 09:52:54,980 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2021-05-06 09:52:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:54,981 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-05-06 09:52:54,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 09:52:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-05-06 09:52:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 09:52:54,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:54,983 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:54,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 09:52:54,983 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:54,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:54,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1056930164, now seen corresponding path program 1 times [2021-05-06 09:52:54,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:54,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470301264] [2021-05-06 09:52:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:54,999 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:54,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288909364] [2021-05-06 09:52:54,999 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 [2021-05-06 09:52:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:55,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 09:52:55,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:55,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:55,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:55,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470301264] [2021-05-06 09:52:55,217 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:55,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288909364] [2021-05-06 09:52:55,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288909364] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 09:52:55,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 09:52:55,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 09:52:55,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777645284] [2021-05-06 09:52:55,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 09:52:55,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:55,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 09:52:55,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 09:52:55,219 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 09:52:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:55,254 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-05-06 09:52:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 09:52:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-05-06 09:52:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:55,256 INFO L225 Difference]: With dead ends: 33 [2021-05-06 09:52:55,256 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 09:52:55,257 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 09:52:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 09:52:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-05-06 09:52:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1666666666666667) 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), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 09:52:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-06 09:52:55,262 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2021-05-06 09:52:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:55,262 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-06 09:52:55,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 09:52:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-06 09:52:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 09:52:55,263 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 09:52:55,263 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 09:52:55,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 09:52:55,486 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 09:52:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 09:52:55,486 INFO L82 PathProgramCache]: Analyzing trace with hash -127181274, now seen corresponding path program 1 times [2021-05-06 09:52:55,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 09:52:55,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11199837] [2021-05-06 09:52:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 09:52:55,505 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 09:52:55,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665066921] [2021-05-06 09:52:55,506 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 [2021-05-06 09:52:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 09:52:55,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 09:52:55,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 09:52:55,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 09:52:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 09:52:55,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 09:52:55,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11199837] [2021-05-06 09:52:55,749 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 09:52:55,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665066921] [2021-05-06 09:52:55,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665066921] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 09:52:55,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 09:52:55,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 09:52:55,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641033187] [2021-05-06 09:52:55,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 09:52:55,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 09:52:55,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 09:52:55,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 09:52:55,750 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 09:52:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 09:52:55,824 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-05-06 09:52:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 09:52:55,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2021-05-06 09:52:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 09:52:55,825 INFO L225 Difference]: With dead ends: 28 [2021-05-06 09:52:55,825 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 09:52:55,825 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-06 09:52:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 09:52:55,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 09:52:55,826 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) [2021-05-06 09:52:55,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 09:52:55,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-05-06 09:52:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 09:52:55,826 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 09:52:55,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 09:52:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 09:52:55,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 09:52:56,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 09:52:56,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 09:52:56 BasicIcfg [2021-05-06 09:52:56,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 09:52:56,053 INFO L168 Benchmark]: Toolchain (without parser) took 2253.81 ms. Allocated memory is still 180.4 MB. Free memory was 145.3 MB in the beginning and 154.9 MB in the end (delta: -9.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 09:52:56,054 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 180.4 MB. Free memory is still 162.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 09:52:56,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.62 ms. Allocated memory is still 180.4 MB. Free memory was 145.1 MB in the beginning and 135.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 09:52:56,057 INFO L168 Benchmark]: Boogie Preprocessor took 93.05 ms. Allocated memory is still 180.4 MB. Free memory was 135.4 MB in the beginning and 162.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2021-05-06 09:52:56,058 INFO L168 Benchmark]: RCFGBuilder took 395.49 ms. Allocated memory is still 180.4 MB. Free memory was 162.9 MB in the beginning and 148.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 09:52:56,058 INFO L168 Benchmark]: IcfgTransformer took 26.74 ms. Allocated memory is still 180.4 MB. Free memory was 148.5 MB in the beginning and 147.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 09:52:56,058 INFO L168 Benchmark]: TraceAbstraction took 1491.93 ms. Allocated memory is still 180.4 MB. Free memory was 146.9 MB in the beginning and 154.9 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 09:52:56,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 180.4 MB. Free memory is still 162.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 239.62 ms. Allocated memory is still 180.4 MB. Free memory was 145.1 MB in the beginning and 135.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.05 ms. Allocated memory is still 180.4 MB. Free memory was 135.4 MB in the beginning and 162.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 395.49 ms. Allocated memory is still 180.4 MB. Free memory was 162.9 MB in the beginning and 148.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 26.74 ms. Allocated memory is still 180.4 MB. Free memory was 148.5 MB in the beginning and 147.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1491.93 ms. Allocated memory is still 180.4 MB. Free memory was 146.9 MB in the beginning and 154.9 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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: 1440.2ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 12.0ms, AutomataDifference: 192.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 34 SDslu, 155 SDs, 0 SdLazy, 77 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 123.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.9ms SsaConstructionTime, 98.1ms SatisfiabilityAnalysisTime, 421.9ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 146 SizeOfPredicates, 4 NumberOfNonLiveVariables, 241 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 13/14 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...