/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 03:18:30,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 03:18:30,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 03:18:30,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 03:18:30,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 03:18:30,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 03:18:30,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 03:18:30,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 03:18:30,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 03:18:30,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 03:18:30,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 03:18:30,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 03:18:30,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 03:18:30,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 03:18:30,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 03:18:30,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 03:18:30,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 03:18:30,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 03:18:30,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 03:18:30,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 03:18:30,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 03:18:30,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 03:18:30,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 03:18:30,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 03:18:30,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 03:18:30,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 03:18:30,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 03:18:30,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 03:18:30,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 03:18:30,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 03:18:30,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 03:18:30,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 03:18:30,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 03:18:30,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 03:18:30,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 03:18:30,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 03:18:30,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-01 03:18:30,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 03:18:30,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 03:18:30,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 03:18:30,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 03:18:30,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 03:18:30,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 03:18:30,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 03:18:30,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 03:18:30,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 03:18:30,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 03:18:30,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 03:18:30,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 03:18:30,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 03:18:30,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 03:18:30,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 03:18:30,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 03:18:30,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 03:18:30,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 03:18:30,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 03:18:30,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 03:18:30,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 03:18:30,517 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-01 03:18:30,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 03:18:30,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 03:18:30,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 03:18:30,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 03:18:30,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 03:18:30,853 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 03:18:30,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2021-05-01 03:18:30,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6282d59c6/66452ad86b154c62952a881307f7c263/FLAG0889ffdba [2021-05-01 03:18:31,791 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 03:18:31,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2021-05-01 03:18:31,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6282d59c6/66452ad86b154c62952a881307f7c263/FLAG0889ffdba [2021-05-01 03:18:31,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6282d59c6/66452ad86b154c62952a881307f7c263 [2021-05-01 03:18:31,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 03:18:31,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-01 03:18:31,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 03:18:31,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 03:18:31,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 03:18:31,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:18:31" (1/1) ... [2021-05-01 03:18:31,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b7a3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:31, skipping insertion in model container [2021-05-01 03:18:31,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:18:31" (1/1) ... [2021-05-01 03:18:31,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 03:18:31,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 03:18:32,140 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-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-05-01 03:18:32,144 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-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-05-01 03:18:32,146 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-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-05-01 03:18:32,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 03:18:32,159 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 03:18:32,217 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-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-05-01 03:18:32,220 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-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-05-01 03:18:32,224 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-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-05-01 03:18:32,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 03:18:32,248 INFO L208 MainTranslator]: Completed translation [2021-05-01 03:18:32,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32 WrapperNode [2021-05-01 03:18:32,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 03:18:32,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 03:18:32,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 03:18:32,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 03:18:32,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (1/1) ... [2021-05-01 03:18:32,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (1/1) ... [2021-05-01 03:18:32,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (1/1) ... [2021-05-01 03:18:32,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (1/1) ... [2021-05-01 03:18:32,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (1/1) ... [2021-05-01 03:18:32,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (1/1) ... [2021-05-01 03:18:32,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (1/1) ... [2021-05-01 03:18:32,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 03:18:32,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 03:18:32,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 03:18:32,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 03:18:32,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (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 [2021-05-01 03:18:32,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 03:18:32,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 03:18:32,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 03:18:32,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 03:18:32,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 03:18:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 03:18:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 03:18:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 03:18:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 03:18:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 03:18:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 03:18:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 03:18:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 03:18:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 03:18:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 03:18:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 03:18:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 03:18:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 03:18:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 03:18:32,592 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 03:18:32,592 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-01 03:18:32,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:18:32 BoogieIcfgContainer [2021-05-01 03:18:32,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 03:18:32,594 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-01 03:18:32,594 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-01 03:18:32,595 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-01 03:18:32,597 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:18:32" (1/1) ... [2021-05-01 03:18:32,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:18:32 BasicIcfg [2021-05-01 03:18:32,628 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-01 03:18:32,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 03:18:32,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 03:18:32,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 03:18:32,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 03:18:31" (1/4) ... [2021-05-01 03:18:32,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca7711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:18:32, skipping insertion in model container [2021-05-01 03:18:32,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:18:32" (2/4) ... [2021-05-01 03:18:32,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca7711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:18:32, skipping insertion in model container [2021-05-01 03:18:32,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:18:32" (3/4) ... [2021-05-01 03:18:32,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca7711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:18:32, skipping insertion in model container [2021-05-01 03:18:32,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:18:32" (4/4) ... [2021-05-01 03:18:32,651 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.cJordan [2021-05-01 03:18:32,656 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-01 03:18:32,659 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-05-01 03:18:32,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-01 03:18:32,730 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 03:18:32,731 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-01 03:18:32,731 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-01 03:18:32,731 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 03:18:32,731 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 03:18:32,731 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 03:18:32,731 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 03:18:32,731 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 03:18:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 03:18:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-05-01 03:18:32,753 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:18:32,753 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:18:32,753 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:18:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:18:32,761 INFO L82 PathProgramCache]: Analyzing trace with hash 132956993, now seen corresponding path program 1 times [2021-05-01 03:18:32,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:18:32,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438332186] [2021-05-01 03:18:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:18:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:18:32,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:32,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:32,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:32,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:32,988 INFO L142 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size [2021-05-01 03:18:32,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 03:18:33,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 03:18:33,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:33,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:18:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:18:33,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:18:33,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:18:33,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438332186] [2021-05-01 03:18:33,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438332186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:18:33,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:18:33,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 03:18:33,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404867069] [2021-05-01 03:18:33,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 03:18:33,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:18:33,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 03:18:33,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 03:18:33,125 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:18:33,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:18:33,351 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-05-01 03:18:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 03:18:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-05-01 03:18:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:18:33,358 INFO L225 Difference]: With dead ends: 24 [2021-05-01 03:18:33,358 INFO L226 Difference]: Without dead ends: 18 [2021-05-01 03:18:33,359 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 229.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-01 03:18:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-01 03:18:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-01 03:18:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:18:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-05-01 03:18:33,385 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2021-05-01 03:18:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:18:33,385 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-05-01 03:18:33,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:18:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-05-01 03:18:33,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 03:18:33,386 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:18:33,386 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:18:33,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 03:18:33,387 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:18:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:18:33,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1077314396, now seen corresponding path program 1 times [2021-05-01 03:18:33,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:18:33,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499483776] [2021-05-01 03:18:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:18:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:18:33,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:33,423 INFO L142 QuantifierPusher]: treesize reduction 11, result has 31.3 percent of original size [2021-05-01 03:18:33,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 03:18:33,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 03:18:33,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:18:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:18:33,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:18:33,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:18:33,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499483776] [2021-05-01 03:18:33,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499483776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:18:33,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:18:33,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 03:18:33,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739722202] [2021-05-01 03:18:33,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 03:18:33,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:18:33,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 03:18:33,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 03:18:33,475 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:18:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:18:33,568 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-01 03:18:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-01 03:18:33,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-01 03:18:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:18:33,570 INFO L225 Difference]: With dead ends: 17 [2021-05-01 03:18:33,570 INFO L226 Difference]: Without dead ends: 17 [2021-05-01 03:18:33,570 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-01 03:18:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-01 03:18:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-01 03:18:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:18:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-01 03:18:33,573 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-01 03:18:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:18:33,573 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-01 03:18:33,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:18:33,574 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-01 03:18:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 03:18:33,574 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:18:33,574 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:18:33,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 03:18:33,575 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:18:33,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:18:33,575 INFO L82 PathProgramCache]: Analyzing trace with hash -211981815, now seen corresponding path program 1 times [2021-05-01 03:18:33,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:18:33,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196068034] [2021-05-01 03:18:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:18:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:18:33,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:33,628 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-05-01 03:18:33,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 03:18:33,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 03:18:33,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 03:18:33,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:18:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:18:33,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:18:33,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:18:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:18:33,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:18:33,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196068034] [2021-05-01 03:18:33,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196068034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:18:33,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:18:33,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 03:18:33,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040361771] [2021-05-01 03:18:33,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 03:18:33,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:18:33,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 03:18:33,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-01 03:18:33,719 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:18:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:18:34,050 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-05-01 03:18:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 03:18:34,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-01 03:18:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:18:34,052 INFO L225 Difference]: With dead ends: 23 [2021-05-01 03:18:34,052 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 03:18:34,053 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 314.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-01 03:18:34,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 03:18:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 03:18:34,054 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) [2021-05-01 03:18:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 03:18:34,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-01 03:18:34,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:18:34,054 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 03:18:34,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:18:34,055 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 03:18:34,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 03:18:34,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 03:18:34,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:18:34 BasicIcfg [2021-05-01 03:18:34,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 03:18:34,061 INFO L168 Benchmark]: Toolchain (without parser) took 2115.52 ms. Allocated memory was 178.3 MB in the beginning and 213.9 MB in the end (delta: 35.7 MB). Free memory was 142.9 MB in the beginning and 150.1 MB in the end (delta: -7.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2021-05-01 03:18:34,061 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 178.3 MB. Free memory is still 159.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 03:18:34,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.82 ms. Allocated memory is still 178.3 MB. Free memory was 142.7 MB in the beginning and 161.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. [2021-05-01 03:18:34,066 INFO L168 Benchmark]: Boogie Preprocessor took 39.24 ms. Allocated memory is still 178.3 MB. Free memory was 161.2 MB in the beginning and 160.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 03:18:34,067 INFO L168 Benchmark]: RCFGBuilder took 303.17 ms. Allocated memory is still 178.3 MB. Free memory was 160.1 MB in the beginning and 144.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-01 03:18:34,067 INFO L168 Benchmark]: IcfgTransformer took 34.44 ms. Allocated memory is still 178.3 MB. Free memory was 144.4 MB in the beginning and 143.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 03:18:34,068 INFO L168 Benchmark]: TraceAbstraction took 1429.41 ms. Allocated memory was 178.3 MB in the beginning and 213.9 MB in the end (delta: 35.7 MB). Free memory was 142.8 MB in the beginning and 150.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-05-01 03:18:34,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 178.3 MB. Free memory is still 159.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 300.82 ms. Allocated memory is still 178.3 MB. Free memory was 142.7 MB in the beginning and 161.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.24 ms. Allocated memory is still 178.3 MB. Free memory was 161.2 MB in the beginning and 160.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 303.17 ms. Allocated memory is still 178.3 MB. Free memory was 160.1 MB in the beginning and 144.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 34.44 ms. Allocated memory is still 178.3 MB. Free memory was 144.4 MB in the beginning and 143.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1429.41 ms. Allocated memory was 178.3 MB in the beginning and 213.9 MB in the end (delta: 35.7 MB). Free memory was 142.8 MB in the beginning and 150.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 64]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 48]: 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 3 procedures, 24 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1336.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 14.5ms, AutomataDifference: 680.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 83 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 118.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 640.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.2ms SsaConstructionTime, 69.4ms SatisfiabilityAnalysisTime, 403.8ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...