/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:02:16,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:02:16,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:02:16,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 06:02:16,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:02:16,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:02:16,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:02:16,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:02:16,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:02:16,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:02:16,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:02:16,821 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:02:16,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:02:16,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:02:16,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:02:16,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:02:16,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:02:16,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:02:16,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:02:16,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:02:16,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:02:16,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:02:16,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:02:16,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:02:16,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:02:16,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:02:16,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:02:16,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:02:16,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:02:16,825 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:02:16,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:02:17,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:02:17,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:02:17,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:02:17,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:02:17,195 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:02:17,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2021-05-06 06:02:17,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bd5a2a9/3746f040ee924d50acf25cd18df7b3c7/FLAG00317940e [2021-05-06 06:02:17,691 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:02:17,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2021-05-06 06:02:17,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bd5a2a9/3746f040ee924d50acf25cd18df7b3c7/FLAG00317940e [2021-05-06 06:02:17,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bd5a2a9/3746f040ee924d50acf25cd18df7b3c7 [2021-05-06 06:02:17,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:02:17,718 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:02:17,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:02:17,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:02:17,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:02:17,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3249631b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17, skipping insertion in model container [2021-05-06 06:02:17,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:02:17,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:02:17,860 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2021-05-06 06:02:17,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:02:17,877 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:02:17,892 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2021-05-06 06:02:17,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:02:17,922 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:02:17,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17 WrapperNode [2021-05-06 06:02:17,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:02:17,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:02:17,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:02:17,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:02:17,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (1/1) ... [2021-05-06 06:02:17,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:02:17,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:02:17,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:02:17,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:02:17,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (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 06:02:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:02:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:02:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:02:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:02:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:02:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:02:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:02:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:02:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 06:02:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 06:02:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:02:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:02:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:02:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:02:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:02:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:02:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:02:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:02:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:02:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:02:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:02:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:02:18,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:02:18,302 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:02:18,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:02:18 BoogieIcfgContainer [2021-05-06 06:02:18,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:02:18,303 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:02:18,304 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:02:18,304 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:02:18,306 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:02:18" (1/1) ... [2021-05-06 06:02:18,485 WARN L240 tifierPushTermWalker]: treesize reduction 8, result has 88.6 percent of original size [2021-05-06 06:02:18,543 WARN L245 tifierPushTermWalker]: treesize reduction 8, result has 88.6 percent of original size 62 [2021-05-06 06:02:18,575 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:02:18,575 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_2 (+ v_main_~x~0_1 1)) (= (+ v_main_~z~0_2 1) v_main_~z~0_1) (= v_main_~y~0_1 (+ v_main_~y~0_2 (- 2))) (not (= v_main_~x~0_2 0))) InVars {main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_~z~0=v_main_~z~0_1, main_~y~0=v_main_~y~0_1, main_#t~post5=|v_main_#t~post5_1|, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_~y~0, main_#t~post5, main_#t~post6] to Formula: (let ((.cse0 (= v_main_~x~0_2 0))) (or (and (< 0 v_itFin_1) (= v_main_~x~0_2 (+ v_itFin_1 v_main_~x~0_1)) (= (+ v_itFin_1 v_main_~z~0_2) v_main_~z~0_1) (= v_main_~y~0_2 (+ (* 2 v_itFin_1) v_main_~y~0_1)) (not .cse0) (or (< v_itFin_1 (+ v_main_~x~0_2 1)) (< v_main_~x~0_2 1))) (and (= v_main_~y~0_2 v_main_~y~0_1) (= v_itFin_1 0) (= |v_main_#t~post6_3| |v_main_#t~post6_1|) .cse0 (= v_main_~x~0_2 v_main_~x~0_1) (= |v_main_#t~post5_3| |v_main_#t~post5_1|) (= v_main_~z~0_2 v_main_~z~0_1)))) InVars {main_~y~0=v_main_~y~0_2, main_#t~post5=|v_main_#t~post5_3|, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2, main_#t~post6=|v_main_#t~post6_3|} OutVars{main_~y~0=v_main_~y~0_1, main_#t~post5=|v_main_#t~post5_1|, main_~x~0=v_main_~x~0_1, main_~z~0=v_main_~z~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~z~0, main_~y~0, main_#t~post5, main_#t~post6] [2021-05-06 06:02:18,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:02:18 BasicIcfg [2021-05-06 06:02:18,580 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:02:18,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:02:18,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:02:18,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:02:18,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:02:17" (1/4) ... [2021-05-06 06:02:18,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b057b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:02:18, skipping insertion in model container [2021-05-06 06:02:18,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:02:17" (2/4) ... [2021-05-06 06:02:18,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b057b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:02:18, skipping insertion in model container [2021-05-06 06:02:18,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:02:18" (3/4) ... [2021-05-06 06:02:18,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b057b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:02:18, skipping insertion in model container [2021-05-06 06:02:18,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:02:18" (4/4) ... [2021-05-06 06:02:18,585 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.iJordan [2021-05-06 06:02:18,589 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:02:18,591 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:02:18,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:02:18,614 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:02:18,614 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:02:18,614 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:02:18,614 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:02:18,614 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:02:18,615 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:02:18,615 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:02:18,615 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:02:18,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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 06:02:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 06:02:18,628 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:02:18,628 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:02:18,629 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:02:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:02:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1409552995, now seen corresponding path program 1 times [2021-05-06 06:02:18,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:02:18,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609811916] [2021-05-06 06:02:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:02:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:02:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:02:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:02:18,806 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 06:02:18,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:02:18,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609811916] [2021-05-06 06:02:18,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609811916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:02:18,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:02:18,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:02:18,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604261403] [2021-05-06 06:02:18,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:02:18,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:02:18,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:02:18,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:02:18,834 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 06:02:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:02:18,883 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-05-06 06:02:18,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:02:18,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 14 [2021-05-06 06:02:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:02:18,889 INFO L225 Difference]: With dead ends: 22 [2021-05-06 06:02:18,889 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 06:02:18,890 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:02:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 06:02:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-06 06:02:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 06:02:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-06 06:02:18,911 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 14 [2021-05-06 06:02:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:02:18,911 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-06 06:02:18,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 06:02:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-06 06:02:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 06:02:18,913 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:02:18,913 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:02:18,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:02:18,913 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:02:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:02:18,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1438182146, now seen corresponding path program 1 times [2021-05-06 06:02:18,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:02:18,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616416732] [2021-05-06 06:02:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:02:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:02:19,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:02:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:02:19,146 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 06:02:19,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:02:19,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616416732] [2021-05-06 06:02:19,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616416732] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:02:19,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:02:19,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 06:02:19,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017184810] [2021-05-06 06:02:19,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 06:02:19,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:02:19,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 06:02:19,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:02:19,149 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 06:02:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:02:19,365 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-06 06:02:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 06:02:19,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 14 [2021-05-06 06:02:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:02:19,366 INFO L225 Difference]: With dead ends: 20 [2021-05-06 06:02:19,366 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 06:02:19,367 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 266.5ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-06 06:02:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 06:02:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-06 06:02:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 06:02:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-06 06:02:19,369 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-05-06 06:02:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:02:19,369 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-06 06:02:19,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 06:02:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-06 06:02:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 06:02:19,370 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:02:19,370 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:02:19,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:02:19,370 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:02:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:02:19,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1832655910, now seen corresponding path program 1 times [2021-05-06 06:02:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:02:19,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172717659] [2021-05-06 06:02:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:02:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:02:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:02:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:02:19,545 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 06:02:19,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:02:19,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172717659] [2021-05-06 06:02:19,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172717659] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:02:19,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418065211] [2021-05-06 06:02:19,546 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 06:02:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:02:19,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 06:02:19,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:02:19,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:02:19,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:02:19,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:02:19,924 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 06:02:19,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418065211] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:02:19,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:02:19,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-05-06 06:02:19,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996703103] [2021-05-06 06:02:19,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 06:02:19,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:02:19,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 06:02:19,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-05-06 06:02:19,926 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 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 06:02:20,264 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-05-06 06:02:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:02:20,310 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-06 06:02:20,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 06:02:20,310 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 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 15 [2021-05-06 06:02:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:02:20,311 INFO L225 Difference]: With dead ends: 14 [2021-05-06 06:02:20,311 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:02:20,311 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 577.5ms TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-05-06 06:02:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:02:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:02:20,312 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 06:02:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:02:20,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-05-06 06:02:20,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:02:20,312 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:02:20,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 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 06:02:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:02:20,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:02:20,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 06:02:20,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:02:20 BasicIcfg [2021-05-06 06:02:20,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:02:20,516 INFO L168 Benchmark]: Toolchain (without parser) took 2798.56 ms. Allocated memory is still 243.3 MB. Free memory was 208.2 MB in the beginning and 95.0 MB in the end (delta: 113.2 MB). Peak memory consumption was 114.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:02:20,516 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 243.3 MB. Free memory is still 224.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:02:20,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.09 ms. Allocated memory is still 243.3 MB. Free memory was 208.0 MB in the beginning and 226.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:02:20,517 INFO L168 Benchmark]: Boogie Preprocessor took 33.86 ms. Allocated memory is still 243.3 MB. Free memory was 226.3 MB in the beginning and 224.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:02:20,517 INFO L168 Benchmark]: RCFGBuilder took 345.19 ms. Allocated memory is still 243.3 MB. Free memory was 224.7 MB in the beginning and 208.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:02:20,517 INFO L168 Benchmark]: IcfgTransformer took 276.29 ms. Allocated memory is still 243.3 MB. Free memory was 208.5 MB in the beginning and 190.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-05-06 06:02:20,518 INFO L168 Benchmark]: TraceAbstraction took 1934.69 ms. Allocated memory is still 243.3 MB. Free memory was 190.1 MB in the beginning and 95.0 MB in the end (delta: 95.2 MB). Peak memory consumption was 95.8 MB. Max. memory is 8.0 GB. [2021-05-06 06:02:20,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 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 243.3 MB. Free memory is still 224.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 202.09 ms. Allocated memory is still 243.3 MB. Free memory was 208.0 MB in the beginning and 226.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.86 ms. Allocated memory is still 243.3 MB. Free memory was 226.3 MB in the beginning and 224.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 345.19 ms. Allocated memory is still 243.3 MB. Free memory was 224.7 MB in the beginning and 208.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 276.29 ms. Allocated memory is still 243.3 MB. Free memory was 208.5 MB in the beginning and 190.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1934.69 ms. Allocated memory is still 243.3 MB. Free memory was 190.1 MB in the beginning and 95.0 MB in the end (delta: 95.2 MB). Peak memory consumption was 95.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1900.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 8.2ms, AutomataDifference: 670.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 47 SDslu, 60 SDs, 0 SdLazy, 108 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 878.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.7ms SsaConstructionTime, 94.9ms SatisfiabilityAnalysisTime, 678.1ms InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 4 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 15 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...