/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/loops/veris.c_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 05:31:45,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 05:31:45,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 05:31:45,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 05:31:45,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 05:31:45,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 05:31:45,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 05:31:45,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 05:31:45,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 05:31:45,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 05:31:45,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 05:31:45,952 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 05:31:45,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 05:31:45,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 05:31:45,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 05:31:45,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 05:31:45,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 05:31:45,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 05:31:45,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 05:31:45,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 05:31:45,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 05:31:45,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 05:31:45,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 05:31:45,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 05:31:45,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 05:31:45,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 05:31:45,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:31:45,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 05:31:45,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 05:31:45,956 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 05:31:45,956 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 05:31:46,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 05:31:46,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 05:31:46,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 05:31:46,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 05:31:46,265 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 05:31:46,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2021-05-06 05:31:46,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e254fb69f/ba9b30378a3e4452a357c4c7b97ebb57/FLAG839618402 [2021-05-06 05:31:46,729 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 05:31:46,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2021-05-06 05:31:46,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e254fb69f/ba9b30378a3e4452a357c4c7b97ebb57/FLAG839618402 [2021-05-06 05:31:47,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e254fb69f/ba9b30378a3e4452a357c4c7b97ebb57 [2021-05-06 05:31:47,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 05:31:47,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 05:31:47,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 05:31:47,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 05:31:47,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 05:31:47,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d350904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47, skipping insertion in model container [2021-05-06 05:31:47,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 05:31:47,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 05:31:47,294 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-05-06 05:31:47,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:31:47,333 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 05:31:47,343 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-05-06 05:31:47,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:31:47,391 INFO L208 MainTranslator]: Completed translation [2021-05-06 05:31:47,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47 WrapperNode [2021-05-06 05:31:47,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 05:31:47,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 05:31:47,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 05:31:47,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 05:31:47,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 05:31:47,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 05:31:47,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 05:31:47,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 05:31:47,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:31:47,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 05:31:47,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 05:31:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 05:31:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 05:31:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2021-05-06 05:31:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 05:31:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 05:31:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 05:31:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 05:31:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 05:31:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 05:31:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 05:31:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 05:31:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2021-05-06 05:31:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 05:31:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 05:31:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 05:31:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 05:31:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 05:31:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 05:31:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 05:31:47,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 05:31:47,808 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 05:31:47,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:47 BoogieIcfgContainer [2021-05-06 05:31:47,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 05:31:47,810 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 05:31:47,810 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 05:31:47,811 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 05:31:47,813 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:47" (1/1) ... [2021-05-06 05:31:47,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:31:47 BasicIcfg [2021-05-06 05:31:47,825 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 05:31:47,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 05:31:47,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 05:31:47,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 05:31:47,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 05:31:47" (1/4) ... [2021-05-06 05:31:47,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e5538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:31:47, skipping insertion in model container [2021-05-06 05:31:47,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:47" (2/4) ... [2021-05-06 05:31:47,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e5538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:31:47, skipping insertion in model container [2021-05-06 05:31:47,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:47" (3/4) ... [2021-05-06 05:31:47,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e5538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:31:47, skipping insertion in model container [2021-05-06 05:31:47,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:31:47" (4/4) ... [2021-05-06 05:31:47,832 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.iJordan [2021-05-06 05:31:47,836 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 05:31:47,844 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 05:31:47,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 05:31:47,872 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 05:31:47,872 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 05:31:47,872 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 05:31:47,872 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 05:31:47,872 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 05:31:47,872 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 05:31:47,872 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 05:31:47,872 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 05:31:47,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 05:31:47,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 05:31:47,891 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:47,891 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:31:47,891 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:47,896 INFO L82 PathProgramCache]: Analyzing trace with hash 612194795, now seen corresponding path program 1 times [2021-05-06 05:31:47,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:47,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946864144] [2021-05-06 05:31:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:48,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:48,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946864144] [2021-05-06 05:31:48,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946864144] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:31:48,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:31:48,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 05:31:48,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144941115] [2021-05-06 05:31:48,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 05:31:48,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:48,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 05:31:48,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-06 05:31:48,325 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:31:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:48,723 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-05-06 05:31:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 05:31:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 05:31:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:48,730 INFO L225 Difference]: With dead ends: 37 [2021-05-06 05:31:48,730 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 05:31:48,732 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 312.8ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-05-06 05:31:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 05:31:48,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-05-06 05:31:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-06 05:31:48,789 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2021-05-06 05:31:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:48,789 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-06 05:31:48,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:31:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-06 05:31:48,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-06 05:31:48,790 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:48,790 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:31:48,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 05:31:48,790 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:48,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1895818048, now seen corresponding path program 1 times [2021-05-06 05:31:48,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:48,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168902023] [2021-05-06 05:31:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:49,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-06 05:31:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:49,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:49,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168902023] [2021-05-06 05:31:49,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168902023] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:31:49,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250116915] [2021-05-06 05:31:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 05:31:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:49,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 05:31:49,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 05:31:49,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:49,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250116915] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:31:49,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 05:31:49,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-06 05:31:49,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286732794] [2021-05-06 05:31:49,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 05:31:49,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:49,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 05:31:49,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-05-06 05:31:49,312 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:49,668 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-05-06 05:31:49,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 05:31:49,669 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2021-05-06 05:31:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:49,670 INFO L225 Difference]: With dead ends: 34 [2021-05-06 05:31:49,670 INFO L226 Difference]: Without dead ends: 34 [2021-05-06 05:31:49,671 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 378.0ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-05-06 05:31:49,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-06 05:31:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-05-06 05:31:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 05:31:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-06 05:31:49,686 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2021-05-06 05:31:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:49,687 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-06 05:31:49,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-06 05:31:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 05:31:49,688 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:49,688 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:31:49,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 05:31:49,915 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:49,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1869530475, now seen corresponding path program 2 times [2021-05-06 05:31:49,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:49,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001040377] [2021-05-06 05:31:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-06 05:31:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:50,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 05:31:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 05:31:50,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:50,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001040377] [2021-05-06 05:31:50,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001040377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:31:50,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686485833] [2021-05-06 05:31:50,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 05:31:50,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-06 05:31:50,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 05:31:50,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 05:31:50,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 05:31:50,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-06 05:31:50,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686485833] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:31:50,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 05:31:50,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-06 05:31:50,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026793159] [2021-05-06 05:31:50,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 05:31:50,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:50,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 05:31:50,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-05-06 05:31:50,351 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:50,606 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-05-06 05:31:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 05:31:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-05-06 05:31:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:50,607 INFO L225 Difference]: With dead ends: 30 [2021-05-06 05:31:50,607 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 05:31:50,608 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 316.4ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-05-06 05:31:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 05:31:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 05:31:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 05:31:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 05:31:50,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-05-06 05:31:50,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:50,609 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 05:31:50,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 05:31:50,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 05:31:50,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 05:31:50,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:31:50 BasicIcfg [2021-05-06 05:31:50,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 05:31:50,829 INFO L168 Benchmark]: Toolchain (without parser) took 3706.31 ms. Allocated memory was 221.2 MB in the beginning and 266.3 MB in the end (delta: 45.1 MB). Free memory was 185.9 MB in the beginning and 124.5 MB in the end (delta: 61.4 MB). Peak memory consumption was 107.2 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:50,829 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 221.2 MB. Free memory was 202.9 MB in the beginning and 202.8 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:31:50,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.87 ms. Allocated memory is still 221.2 MB. Free memory was 185.7 MB in the beginning and 203.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:50,830 INFO L168 Benchmark]: Boogie Preprocessor took 42.33 ms. Allocated memory is still 221.2 MB. Free memory was 203.7 MB in the beginning and 202.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:50,830 INFO L168 Benchmark]: RCFGBuilder took 372.64 ms. Allocated memory is still 221.2 MB. Free memory was 202.2 MB in the beginning and 187.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:50,830 INFO L168 Benchmark]: IcfgTransformer took 15.33 ms. Allocated memory is still 221.2 MB. Free memory was 186.4 MB in the beginning and 185.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:50,830 INFO L168 Benchmark]: TraceAbstraction took 3001.54 ms. Allocated memory was 221.2 MB in the beginning and 266.3 MB in the end (delta: 45.1 MB). Free memory was 184.9 MB in the beginning and 124.5 MB in the end (delta: 60.4 MB). Peak memory consumption was 106.0 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:50,831 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 221.2 MB. Free memory was 202.9 MB in the beginning and 202.8 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.87 ms. Allocated memory is still 221.2 MB. Free memory was 185.7 MB in the beginning and 203.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.33 ms. Allocated memory is still 221.2 MB. Free memory was 203.7 MB in the beginning and 202.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 372.64 ms. Allocated memory is still 221.2 MB. Free memory was 202.2 MB in the beginning and 187.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 15.33 ms. Allocated memory is still 221.2 MB. Free memory was 186.4 MB in the beginning and 185.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3001.54 ms. Allocated memory was 221.2 MB in the beginning and 266.3 MB in the end (delta: 45.1 MB). Free memory was 184.9 MB in the beginning and 124.5 MB in the end (delta: 60.4 MB). Peak memory consumption was 106.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2955.2ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 13.6ms, AutomataDifference: 1038.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 97 SDslu, 131 SDs, 0 SdLazy, 322 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 286.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1007.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.0ms SsaConstructionTime, 156.2ms SatisfiabilityAnalysisTime, 1002.6ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 534 SizeOfPredicates, 14 NumberOfNonLiveVariables, 283 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 32/40 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...