/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-03 00:42:59,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 00:42:59,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 00:42:59,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 00:42:59,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 00:42:59,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 00:42:59,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 00:42:59,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-03 00:42:59,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 00:42:59,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 00:42:59,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 00:42:59,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 00:42:59,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 00:42:59,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 00:42:59,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 00:42:59,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 00:42:59,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 00:42:59,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 00:42:59,762 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 00:42:59,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 00:42:59,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 00:42:59,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 00:42:59,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 00:42:59,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 00:42:59,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 00:42:59,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 00:42:59,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:42:59,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 00:42:59,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-03 00:42:59,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 00:42:59,763 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-03 00:42:59,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-03 00:43:00,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 00:43:00,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 00:43:00,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 00:43:00,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-03 00:43:00,018 INFO L275 PluginConnector]: CDTParser initialized [2021-05-03 00:43:00,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound100.c [2021-05-03 00:43:00,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed9182ae/a4591a8126054148b2321bcbe2e42290/FLAG2a16be3bc [2021-05-03 00:43:00,439 INFO L306 CDTParser]: Found 1 translation units. [2021-05-03 00:43:00,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound100.c [2021-05-03 00:43:00,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed9182ae/a4591a8126054148b2321bcbe2e42290/FLAG2a16be3bc [2021-05-03 00:43:00,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed9182ae/a4591a8126054148b2321bcbe2e42290 [2021-05-03 00:43:00,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 00:43:00,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 00:43:00,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-03 00:43:00,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-03 00:43:00,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-03 00:43:00,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:43:00" (1/1) ... [2021-05-03 00:43:00,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92249be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:00, skipping insertion in model container [2021-05-03 00:43:00,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:43:00" (1/1) ... [2021-05-03 00:43:00,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-03 00:43:00,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-03 00:43:00,983 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/egcd2-ll_valuebound100.c[490,503] [2021-05-03 00:43:00,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:43:01,003 INFO L203 MainTranslator]: Completed pre-run [2021-05-03 00:43:01,013 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/egcd2-ll_valuebound100.c[490,503] [2021-05-03 00:43:01,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:43:01,036 INFO L208 MainTranslator]: Completed translation [2021-05-03 00:43:01,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01 WrapperNode [2021-05-03 00:43:01,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-03 00:43:01,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 00:43:01,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 00:43:01,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 00:43:01,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (1/1) ... [2021-05-03 00:43:01,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (1/1) ... [2021-05-03 00:43:01,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (1/1) ... [2021-05-03 00:43:01,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (1/1) ... [2021-05-03 00:43:01,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (1/1) ... [2021-05-03 00:43:01,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (1/1) ... [2021-05-03 00:43:01,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (1/1) ... [2021-05-03 00:43:01,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 00:43:01,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 00:43:01,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 00:43:01,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 00:43:01,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (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 [2021-05-03 00:43:01,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-03 00:43:01,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 00:43:01,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-03 00:43:01,197 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-03 00:43:01,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-03 00:43:01,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-03 00:43:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-03 00:43:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-03 00:43:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-03 00:43:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-03 00:43:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-03 00:43:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-03 00:43:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-03 00:43:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-03 00:43:01,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-03 00:43:01,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-03 00:43:01,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 00:43:01,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-03 00:43:01,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-03 00:43:01,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-03 00:43:01,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 00:43:01,496 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-03 00:43:01,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:43:01 BoogieIcfgContainer [2021-05-03 00:43:01,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 00:43:01,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 00:43:01,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 00:43:01,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 00:43:01,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 12:43:00" (1/3) ... [2021-05-03 00:43:01,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7080c285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:43:01, skipping insertion in model container [2021-05-03 00:43:01,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:01" (2/3) ... [2021-05-03 00:43:01,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7080c285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:43:01, skipping insertion in model container [2021-05-03 00:43:01,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:43:01" (3/3) ... [2021-05-03 00:43:01,513 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound100.c [2021-05-03 00:43:01,517 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-03 00:43:01,520 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 00:43:01,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-03 00:43:01,545 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 00:43:01,545 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 00:43:01,545 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-03 00:43:01,545 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 00:43:01,546 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 00:43:01,546 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 00:43:01,546 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 00:43:01,546 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 00:43:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-03 00:43:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-03 00:43:01,562 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:43:01,563 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:43:01,563 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:43:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:43:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 1 times [2021-05-03 00:43:01,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:43:01,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422830102] [2021-05-03 00:43:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:43:01,615 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:43:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:43:01,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:43:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:43:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-03 00:43:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:43:01,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-03 00:43:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:43:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-03 00:43:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:43:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-03 00:43:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:43:01,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-03 00:43:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:43:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-03 00:43:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:43:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-03 00:43:01,860 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:43:01,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422830102] [2021-05-03 00:43:01,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1422830102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:43:01,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:43:01,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 00:43:01,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204928974] [2021-05-03 00:43:01,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 00:43:01,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:43:01,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 00:43:01,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:43:01,877 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-03 00:43:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:43:02,121 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2021-05-03 00:43:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 00:43:02,123 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2021-05-03 00:43:02,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:43:02,129 INFO L225 Difference]: With dead ends: 73 [2021-05-03 00:43:02,129 INFO L226 Difference]: Without dead ends: 35 [2021-05-03 00:43:02,133 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:43:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-03 00:43:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-03 00:43:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-03 00:43:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2021-05-03 00:43:02,181 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2021-05-03 00:43:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:43:02,182 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2021-05-03 00:43:02,182 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-03 00:43:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2021-05-03 00:43:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-03 00:43:02,184 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:43:02,184 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:43:02,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 00:43:02,184 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:43:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:43:02,186 INFO L82 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 1 times [2021-05-03 00:43:02,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:43:02,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585608321] [2021-05-03 00:43:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:43:02,191 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:43:02,222 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-03 00:43:02,222 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-03 00:43:02,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 00:43:02,238 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-03 00:43:02,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 12:43:02 BoogieIcfgContainer [2021-05-03 00:43:02,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 00:43:02,240 INFO L168 Benchmark]: Toolchain (without parser) took 1387.31 ms. Allocated memory is still 212.9 MB. Free memory was 178.5 MB in the beginning and 182.0 MB in the end (delta: -3.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:43:02,240 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 212.9 MB. Free memory is still 194.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:43:02,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.14 ms. Allocated memory is still 212.9 MB. Free memory was 178.3 MB in the beginning and 168.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-03 00:43:02,242 INFO L168 Benchmark]: Boogie Preprocessor took 27.65 ms. Allocated memory is still 212.9 MB. Free memory was 167.8 MB in the beginning and 166.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-03 00:43:02,242 INFO L168 Benchmark]: RCFGBuilder took 431.29 ms. Allocated memory is still 212.9 MB. Free memory was 166.3 MB in the beginning and 179.8 MB in the end (delta: -13.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-03 00:43:02,243 INFO L168 Benchmark]: TraceAbstraction took 740.72 ms. Allocated memory is still 212.9 MB. Free memory was 179.3 MB in the beginning and 182.0 MB in the end (delta: -2.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:43:02,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 212.9 MB. Free memory is still 194.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 183.14 ms. Allocated memory is still 212.9 MB. Free memory was 178.3 MB in the beginning and 168.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.65 ms. Allocated memory is still 212.9 MB. Free memory was 167.8 MB in the beginning and 166.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.29 ms. Allocated memory is still 212.9 MB. Free memory was 166.3 MB in the beginning and 179.8 MB in the end (delta: -13.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 740.72 ms. Allocated memory is still 212.9 MB. Free memory was 179.3 MB in the beginning and 182.0 MB in the end (delta: -2.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [L19] int x, y; [L20] long long a, b, p, q, r, s, c, k, xy, yy; [L21] x = __VERIFIER_nondet_int() [L22] CALL assume_abort_if_not(x>=0 && x<=100) [L8] COND FALSE !(!cond) [L22] RET assume_abort_if_not(x>=0 && x<=100) [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(y>=0 && y<=100) [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(y>=0 && y<=100) [L25] CALL assume_abort_if_not(x >= 1) [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(x >= 1) [L26] CALL assume_abort_if_not(y >= 1) [L8] COND FALSE !(!cond) [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L34] c = 0 [L35] k = 0 [L36] xy = (long long) x * y [L37] yy = (long long) y * y [L38] CALL assume_abort_if_not(xy < 2147483647) [L8] COND FALSE !(!cond) [L38] RET assume_abort_if_not(xy < 2147483647) [L39] CALL assume_abort_if_not(yy < 2147483647) [L8] COND FALSE !(!cond) [L39] RET assume_abort_if_not(yy < 2147483647) [L41] COND TRUE 1 [L42] COND TRUE !(b != 0) [L71] CALL __VERIFIER_assert(q*x + s*y == 0) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 683.6ms, OverallIterations: 2, TraceHistogramMax: 6, EmptinessCheckTime: 9.9ms, AutomataDifference: 265.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 20 SDslu, 3 SDs, 0 SdLazy, 15 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 154.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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: 38.5ms 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...