/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-zilu/benchmark25_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:52:37,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:52:37,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:52:37,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 06:52:37,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:52:37,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:52:37,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:52:37,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:52:37,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:52:37,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:52:37,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:52:37,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:52:37,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:52:37,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:52:37,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:52:37,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:52:37,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:52:37,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:52:37,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:52:37,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:52:37,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:52:37,571 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:52:37,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:52:37,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:52:37,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:52:37,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:52:37,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:52:37,811 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:52:37,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark25_linear.i [2021-05-06 06:52:37,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a79cbd2/955d9e3f191040daac82c3c4d48dca3d/FLAG56b6c27f4 [2021-05-06 06:52:38,230 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:52:38,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark25_linear.i [2021-05-06 06:52:38,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a79cbd2/955d9e3f191040daac82c3c4d48dca3d/FLAG56b6c27f4 [2021-05-06 06:52:38,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a79cbd2/955d9e3f191040daac82c3c4d48dca3d [2021-05-06 06:52:38,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:52:38,652 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:52:38,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:38,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:52:38,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:52:38,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:38,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abdfc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38, skipping insertion in model container [2021-05-06 06:52:38,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:38,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:52:38,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:52:38,909 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-zilu/benchmark25_linear.i[868,881] [2021-05-06 06:52:38,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:38,927 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:52:38,949 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-zilu/benchmark25_linear.i[868,881] [2021-05-06 06:52:38,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:38,961 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:52:38,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38 WrapperNode [2021-05-06 06:52:38,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:38,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:52:38,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:52:38,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:52:38,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:38,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:38,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:38,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:39,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:39,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:39,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (1/1) ... [2021-05-06 06:52:39,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:52:39,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:52:39,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:52:39,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:52:39,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (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 06:52:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:52:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:52:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:52:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:52:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:52:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:52:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 06:52:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 06:52:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:52:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:52:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:52:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 06:52:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:52:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:52:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:52:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:52:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:52:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:52:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:52:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:52:39,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:52:39,479 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:52:39,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:39 BoogieIcfgContainer [2021-05-06 06:52:39,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:52:39,481 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:52:39,481 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:52:39,497 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:52:39,534 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:39" (1/1) ... [2021-05-06 06:52:39,598 WARN L240 tifierPushTermWalker]: treesize reduction 3, result has 92.7 percent of original size [2021-05-06 06:52:39,661 WARN L245 tifierPushTermWalker]: treesize reduction 3, result has 92.7 percent of original size 38 [2021-05-06 06:52:39,703 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:52:39,703 INFO L91 elerationTransformer]: Accelerated Formula: (and (< v_main_~x~0_3 10) (= v_main_~x~0_2 (+ v_main_~x~0_3 1))) InVars {main_~x~0=v_main_~x~0_3} OutVars{main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_~x~0] to Formula: (or (let ((.cse0 (+ v_itFin_1 v_main_~x~0_3))) (and (= v_main_~x~0_2 .cse0) (< 0 v_itFin_1) (< .cse0 11))) (and (= v_main_~x~0_3 v_main_~x~0_2) (= v_itFin_1 0) (<= 10 v_main_~x~0_3))) InVars {main_~x~0=v_main_~x~0_3} OutVars{main_~x~0=v_main_~x~0_2} AuxVars[v_itFin_1] AssignedVars[main_~x~0] [2021-05-06 06:52:39,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:39 BasicIcfg [2021-05-06 06:52:39,709 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:52:39,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:52:39,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:52:39,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:52:39,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:52:38" (1/4) ... [2021-05-06 06:52:39,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1bd294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:39, skipping insertion in model container [2021-05-06 06:52:39,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:38" (2/4) ... [2021-05-06 06:52:39,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1bd294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:39, skipping insertion in model container [2021-05-06 06:52:39,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:39" (3/4) ... [2021-05-06 06:52:39,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1bd294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:39, skipping insertion in model container [2021-05-06 06:52:39,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:39" (4/4) ... [2021-05-06 06:52:39,717 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.iJordan [2021-05-06 06:52:39,721 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:52:39,724 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:52:39,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:52:39,751 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:52:39,751 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:52:39,751 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:52:39,751 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:52:39,751 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:52:39,751 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:52:39,752 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:52:39,752 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:52:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 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) [2021-05-06 06:52:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:39,765 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:39,765 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:39,765 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:39,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2021-05-06 06:52:39,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:39,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696450676] [2021-05-06 06:52:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:39,916 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 06:52:39,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:39,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696450676] [2021-05-06 06:52:39,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696450676] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:39,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:39,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:52:39,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614195417] [2021-05-06 06:52:39,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:52:39,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:39,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:52:39,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:52:39,931 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-05-06 06:52:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:39,974 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-06 06:52:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:52:39,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2021-05-06 06:52:39,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:39,980 INFO L225 Difference]: With dead ends: 20 [2021-05-06 06:52:39,980 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 06:52:39,982 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:52:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 06:52:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 06:52:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 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) [2021-05-06 06:52:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 06:52:40,001 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-05-06 06:52:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:40,002 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 06:52:40,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-05-06 06:52:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 06:52:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:40,003 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:40,003 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:40,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:52:40,003 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:40,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2021-05-06 06:52:40,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:40,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148796057] [2021-05-06 06:52:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:40,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:40,124 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 06:52:40,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:40,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148796057] [2021-05-06 06:52:40,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148796057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:40,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:40,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:52:40,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934216335] [2021-05-06 06:52:40,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:52:40,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:40,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:52:40,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:52:40,137 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-05-06 06:52:40,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:40,170 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-06 06:52:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:52:40,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2021-05-06 06:52:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:40,170 INFO L225 Difference]: With dead ends: 14 [2021-05-06 06:52:40,170 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 06:52:40,171 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:52:40,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 06:52:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 06:52:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 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) [2021-05-06 06:52:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-06 06:52:40,173 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-06 06:52:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:40,173 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-06 06:52:40,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-05-06 06:52:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-06 06:52:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 06:52:40,174 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:40,174 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:40,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:52:40,174 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:40,175 INFO L82 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2021-05-06 06:52:40,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:40,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358055787] [2021-05-06 06:52:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:40,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:40,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358055787] [2021-05-06 06:52:40,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358055787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:40,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496080260] [2021-05-06 06:52:40,247 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 06:52:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:40,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-06 06:52:40,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:52:40,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:40,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:40,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:40,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:40,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:40,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:40,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496080260] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:40,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:52:40,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-05-06 06:52:40,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043124232] [2021-05-06 06:52:40,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:52:40,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:40,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:52:40,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:52:40,412 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:40,526 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-05-06 06:52:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 06:52:40,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (5), 4 states have call predecessors, (5), 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 06:52:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:40,527 INFO L225 Difference]: With dead ends: 12 [2021-05-06 06:52:40,527 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:52:40,527 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 143.1ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-05-06 06:52:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:52:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:52:40,528 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 06:52:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:52:40,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-05-06 06:52:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:40,528 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:52:40,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:52:40,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:52:40,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 06:52:40,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:40 BasicIcfg [2021-05-06 06:52:40,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:52:40,750 INFO L168 Benchmark]: Toolchain (without parser) took 2097.86 ms. Allocated memory is still 199.2 MB. Free memory was 164.6 MB in the beginning and 111.5 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:40,750 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 199.2 MB. Free memory is still 181.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:52:40,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.12 ms. Allocated memory is still 199.2 MB. Free memory was 164.4 MB in the beginning and 155.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:40,751 INFO L168 Benchmark]: Boogie Preprocessor took 79.81 ms. Allocated memory is still 199.2 MB. Free memory was 155.1 MB in the beginning and 183.2 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:40,751 INFO L168 Benchmark]: RCFGBuilder took 431.11 ms. Allocated memory is still 199.2 MB. Free memory was 183.2 MB in the beginning and 170.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:40,751 INFO L168 Benchmark]: IcfgTransformer took 228.61 ms. Allocated memory is still 199.2 MB. Free memory was 170.3 MB in the beginning and 158.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:40,751 INFO L168 Benchmark]: TraceAbstraction took 1038.63 ms. Allocated memory is still 199.2 MB. Free memory was 157.7 MB in the beginning and 111.5 MB in the end (delta: 46.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:40,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 199.2 MB. Free memory is still 181.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 313.12 ms. Allocated memory is still 199.2 MB. Free memory was 164.4 MB in the beginning and 155.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.81 ms. Allocated memory is still 199.2 MB. Free memory was 155.1 MB in the beginning and 183.2 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.11 ms. Allocated memory is still 199.2 MB. Free memory was 183.2 MB in the beginning and 170.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 228.61 ms. Allocated memory is still 199.2 MB. Free memory was 170.3 MB in the beginning and 158.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1038.63 ms. Allocated memory is still 199.2 MB. Free memory was 157.7 MB in the beginning and 111.5 MB in the end (delta: 46.2 MB). Peak memory consumption was 47.2 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 997.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 8.2ms, AutomataDifference: 224.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 26 SDslu, 36 SDs, 0 SdLazy, 45 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 222.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.8ms SsaConstructionTime, 64.5ms SatisfiabilityAnalysisTime, 319.2ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 1 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...