/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:11:24,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:11:24,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:11:24,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:11:24,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:11:24,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:11:24,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:11:24,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:11:24,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:11:24,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:11:24,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:11:24,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-05-02 18:11:25,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:11:25,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:11:25,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:11:25,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:11:25,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:11:25,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:11:25,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:11:25,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:11:25,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:11:25,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:11:25,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:11:25,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:11:25,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:11:25,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:11:25,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:11:25,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:11:25,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:11:25,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:11:25,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:11:25,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:11:25,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:11:25,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:11:25,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:11:25,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:11:25,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:11:25,037 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:11:25,037 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:11:25,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:11:25,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:11:25,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:11:25,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:11:25,367 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:11:25,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2021-05-02 18:11:25,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2875bd6d8/90302179b3844ce5bc830e24dbf5c7ba/FLAGd981406b0 [2021-05-02 18:11:25,807 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:11:25,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2021-05-02 18:11:25,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2875bd6d8/90302179b3844ce5bc830e24dbf5c7ba/FLAGd981406b0 [2021-05-02 18:11:25,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2875bd6d8/90302179b3844ce5bc830e24dbf5c7ba [2021-05-02 18:11:25,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:11:25,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:11:25,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:11:25,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:11:25,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:11:25,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:11:25" (1/1) ... [2021-05-02 18:11:25,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8abb0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:25, skipping insertion in model container [2021-05-02 18:11:25,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:11:25" (1/1) ... [2021-05-02 18:11:25,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:11:25,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:11:25,983 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2021-05-02 18:11:25,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:11:26,020 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:11:26,035 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2021-05-02 18:11:26,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:11:26,067 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:11:26,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26 WrapperNode [2021-05-02 18:11:26,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:11:26,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:11:26,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:11:26,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:11:26,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (1/1) ... [2021-05-02 18:11:26,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (1/1) ... [2021-05-02 18:11:26,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (1/1) ... [2021-05-02 18:11:26,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (1/1) ... [2021-05-02 18:11:26,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (1/1) ... [2021-05-02 18:11:26,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (1/1) ... [2021-05-02 18:11:26,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (1/1) ... [2021-05-02 18:11:26,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:11:26,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:11:26,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:11:26,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:11:26,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:11:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:11:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:11:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:11:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:11:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:11:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:11:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:11:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:11:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:11:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:11:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:11:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:11:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:11:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:11:26,314 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:11:26,314 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:11:26,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:26 BoogieIcfgContainer [2021-05-02 18:11:26,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:11:26,316 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:11:26,316 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:11:26,317 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:11:26,318 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:26" (1/1) ... [2021-05-02 18:11:26,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:11:26 BasicIcfg [2021-05-02 18:11:26,329 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:11:26,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:11:26,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:11:26,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:11:26,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:11:25" (1/4) ... [2021-05-02 18:11:26,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1863e604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:11:26, skipping insertion in model container [2021-05-02 18:11:26,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:26" (2/4) ... [2021-05-02 18:11:26,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1863e604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:11:26, skipping insertion in model container [2021-05-02 18:11:26,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:26" (3/4) ... [2021-05-02 18:11:26,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1863e604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:11:26, skipping insertion in model container [2021-05-02 18:11:26,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:11:26" (4/4) ... [2021-05-02 18:11:26,335 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.iJordan [2021-05-02 18:11:26,338 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:11:26,341 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:11:26,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:11:26,364 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:11:26,364 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:11:26,364 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:11:26,364 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:11:26,364 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:11:26,364 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:11:26,364 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:11:26,364 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:11:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:11:26,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:11:26,377 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:26,377 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:26,378 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:26,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1293576316, now seen corresponding path program 1 times [2021-05-02 18:11:26,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:26,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542071023] [2021-05-02 18:11:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:26,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:26,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:26,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542071023] [2021-05-02 18:11:26,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542071023] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:11:26,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:11:26,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 18:11:26,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765157184] [2021-05-02 18:11:26,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:11:26,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:26,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:11:26,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:11:26,597 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:26,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:26,791 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-05-02 18:11:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:11:26,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 18:11:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:26,797 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:11:26,797 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:11:26,800 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 157.1ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:11:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:11:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:11:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 18:11:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:11:26,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-02 18:11:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:26,815 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:11:26,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:11:26,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:11:26,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:11:26,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:11:26 BasicIcfg [2021-05-02 18:11:26,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:11:26,822 INFO L168 Benchmark]: Toolchain (without parser) took 989.05 ms. Allocated memory is still 176.2 MB. Free memory was 140.2 MB in the beginning and 125.7 MB in the end (delta: 14.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:26,823 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 176.2 MB. Free memory is still 157.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:11:26,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.82 ms. Allocated memory is still 176.2 MB. Free memory was 140.0 MB in the beginning and 159.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:26,825 INFO L168 Benchmark]: Boogie Preprocessor took 33.38 ms. Allocated memory is still 176.2 MB. Free memory was 159.9 MB in the beginning and 158.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:26,826 INFO L168 Benchmark]: RCFGBuilder took 211.09 ms. Allocated memory is still 176.2 MB. Free memory was 158.4 MB in the beginning and 144.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:26,826 INFO L168 Benchmark]: IcfgTransformer took 13.55 ms. Allocated memory is still 176.2 MB. Free memory was 144.8 MB in the beginning and 143.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:26,827 INFO L168 Benchmark]: TraceAbstraction took 489.40 ms. Allocated memory is still 176.2 MB. Free memory was 143.1 MB in the beginning and 125.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:26,832 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 176.2 MB. Free memory is still 157.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 232.82 ms. Allocated memory is still 176.2 MB. Free memory was 140.0 MB in the beginning and 159.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.38 ms. Allocated memory is still 176.2 MB. Free memory was 159.9 MB in the beginning and 158.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 211.09 ms. Allocated memory is still 176.2 MB. Free memory was 158.4 MB in the beginning and 144.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 13.55 ms. Allocated memory is still 176.2 MB. Free memory was 144.8 MB in the beginning and 143.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 489.40 ms. Allocated memory is still 176.2 MB. Free memory was 143.1 MB in the beginning and 125.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 453.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.8ms, AutomataDifference: 210.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 34 SDs, 0 SdLazy, 53 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 157.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.4ms SsaConstructionTime, 35.0ms SatisfiabilityAnalysisTime, 117.0ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...