/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:24:54,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:24:54,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:24:54,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 08:24:54,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 08:24:54,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 08:24:54,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 08:24:54,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 08:24:54,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 08:24:54,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 08:24:54,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 08:24:54,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 08:24:54,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:24:54,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:24:54,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:24:54,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:24:54,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:24:54,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:24:54,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:24:54,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:24:54,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:24:54,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:24:54,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:24:54,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:24:54,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 08:24:54,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 08:24:54,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 08:24:54,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 08:24:54,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 08:24:54,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 08:24:54,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 08:24:54,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 08:24:54,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 08:24:54,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 08:24:54,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 08:24:54,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 08:24:54,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 08:24:54,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 08:24:54,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:24:54,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:24:54,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:24:54,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:24:54,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:24:54,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:24:54,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:24:54,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:24:54,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:24:54,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:24:54,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:24:54,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:24:54,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:24:54,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:24:54,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:24:54,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:24:54,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:24:54,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:24:54,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:24:54,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:24:54,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:24:54,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:24:54,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:24:54,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:24:54,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:24:54,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:24:54,683 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:24:54,683 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:24:54,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:24:54,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:24:54,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:24:54,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:24:54,999 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:24:54,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound2.c [2021-05-01 08:24:55,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb29ce50f/c95a5a822bf44ea4b9358c4dfbf916e4/FLAGf43792a96 [2021-05-01 08:24:55,449 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:24:55,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound2.c [2021-05-01 08:24:55,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb29ce50f/c95a5a822bf44ea4b9358c4dfbf916e4/FLAGf43792a96 [2021-05-01 08:24:55,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb29ce50f/c95a5a822bf44ea4b9358c4dfbf916e4 [2021-05-01 08:24:55,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:24:55,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:24:55,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:24:55,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:24:55,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:24:55,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0a48bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55, skipping insertion in model container [2021-05-01 08:24:55,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:24:55,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:24:55,610 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/prodbin-ll_valuebound2.c[537,550] [2021-05-01 08:24:55,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:24:55,631 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:24:55,685 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/prodbin-ll_valuebound2.c[537,550] [2021-05-01 08:24:55,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:24:55,698 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:24:55,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55 WrapperNode [2021-05-01 08:24:55,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:24:55,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:24:55,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:24:55,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:24:55,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (1/1) ... [2021-05-01 08:24:55,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:24:55,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:24:55,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:24:55,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:24:55,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (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 [2021-05-01 08:24:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:24:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:24:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:24:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:24:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:24:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:24:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:24:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:24:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:24:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:24:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 08:24:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:24:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:24:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:24:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:24:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:24:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:24:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:24:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:24:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:24:55,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:24:55,910 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:24:55,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:24:55 BoogieIcfgContainer [2021-05-01 08:24:55,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:24:55,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:24:55,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:24:55,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:24:55,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:24:55" (1/3) ... [2021-05-01 08:24:55,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4ca141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:24:55, skipping insertion in model container [2021-05-01 08:24:55,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:55" (2/3) ... [2021-05-01 08:24:55,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4ca141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:24:55, skipping insertion in model container [2021-05-01 08:24:55,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:24:55" (3/3) ... [2021-05-01 08:24:55,916 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c [2021-05-01 08:24:55,920 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:24:55,923 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:24:55,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:24:55,946 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:24:55,946 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:24:55,946 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:24:55,946 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:24:55,946 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:24:55,947 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:24:55,947 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:24:55,947 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:24:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-01 08:24:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-01 08:24:55,960 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:24:55,961 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:24:55,961 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:24:55,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:24:55,965 INFO L82 PathProgramCache]: Analyzing trace with hash -589322634, now seen corresponding path program 1 times [2021-05-01 08:24:55,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:24:55,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166063153] [2021-05-01 08:24:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:24:56,013 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:24:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:24:56,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:24:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:24:56,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:24:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:24:56,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-01 08:24:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:24:56,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:24:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:24:56,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:24:56,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:24:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-01 08:24:56,174 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:24:56,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166063153] [2021-05-01 08:24:56,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1166063153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:24:56,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:24:56,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:24:56,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114373319] [2021-05-01 08:24:56,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:24:56,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:24:56,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:24:56,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:24:56,191 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-01 08:24:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:24:56,317 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2021-05-01 08:24:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:24:56,319 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-01 08:24:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:24:56,324 INFO L225 Difference]: With dead ends: 57 [2021-05-01 08:24:56,324 INFO L226 Difference]: Without dead ends: 27 [2021-05-01 08:24:56,326 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:24:56,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-01 08:24:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-01 08:24:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 08:24:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-01 08:24:56,375 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 28 [2021-05-01 08:24:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:24:56,375 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-01 08:24:56,376 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-01 08:24:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-01 08:24:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-01 08:24:56,377 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:24:56,377 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:24:56,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:24:56,377 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:24:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:24:56,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1736242504, now seen corresponding path program 1 times [2021-05-01 08:24:56,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:24:56,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704729746] [2021-05-01 08:24:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:24:56,390 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:24:56,441 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:24:56,441 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:24:56,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:24:56,452 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:24:56,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:24:56 BoogieIcfgContainer [2021-05-01 08:24:56,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:24:56,458 INFO L168 Benchmark]: Toolchain (without parser) took 982.95 ms. Allocated memory is still 187.7 MB. Free memory was 152.5 MB in the beginning and 168.6 MB in the end (delta: -16.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:24:56,458 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 187.7 MB. Free memory is still 169.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:24:56,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.13 ms. Allocated memory is still 187.7 MB. Free memory was 152.3 MB in the beginning and 171.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-01 08:24:56,459 INFO L168 Benchmark]: Boogie Preprocessor took 18.33 ms. Allocated memory is still 187.7 MB. Free memory was 171.0 MB in the beginning and 169.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 08:24:56,460 INFO L168 Benchmark]: RCFGBuilder took 193.02 ms. Allocated memory is still 187.7 MB. Free memory was 169.3 MB in the beginning and 154.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:24:56,460 INFO L168 Benchmark]: TraceAbstraction took 543.03 ms. Allocated memory is still 187.7 MB. Free memory was 153.5 MB in the beginning and 168.6 MB in the end (delta: -15.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:24:56,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 187.7 MB. Free memory is still 169.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 224.13 ms. Allocated memory is still 187.7 MB. Free memory was 152.3 MB in the beginning and 171.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.33 ms. Allocated memory is still 187.7 MB. Free memory was 171.0 MB in the beginning and 169.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 193.02 ms. Allocated memory is still 187.7 MB. Free memory was 169.3 MB in the beginning and 154.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 543.03 ms. Allocated memory is still 187.7 MB. Free memory was 153.5 MB in the beginning and 168.6 MB in the end (delta: -15.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int a, b; [L22] long long x, y, z; [L24] a = __VERIFIER_nondet_int() [L25] CALL assume_abort_if_not(a>=0 && a<=2) [L10] COND FALSE !(!cond) [L25] RET assume_abort_if_not(a>=0 && a<=2) [L26] b = __VERIFIER_nondet_int() [L27] CALL assume_abort_if_not(b>=0 && b<=2) [L10] COND FALSE !(!cond) [L27] RET assume_abort_if_not(b>=0 && b<=2) [L28] CALL assume_abort_if_not(b >= 1) [L10] COND FALSE !(!cond) [L28] RET assume_abort_if_not(b >= 1) [L30] x = a [L31] y = b [L32] z = 0 [L34] COND TRUE 1 [L35] CALL __VERIFIER_assert(z + x * y == (long long) a * b) [L13] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 499.9ms, OverallIterations: 2, TraceHistogramMax: 3, EmptinessCheckTime: 8.5ms, AutomataDifference: 146.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 19 SDslu, 3 SDs, 0 SdLazy, 8 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...