/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-a47f07a [2021-04-16 03:32:42,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 03:32:42,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 03:32:42,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 03:32:42,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 03:32:42,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 03:32:42,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 03:32:42,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 03:32:42,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 03:32:42,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 03:32:42,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 03:32:42,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 03:32:42,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 03:32:42,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 03:32:42,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 03:32:42,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 03:32:42,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 03:32:42,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 03:32:42,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 03:32:42,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 03:32:42,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 03:32:42,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 03:32:42,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 03:32:42,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 03:32:42,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 03:32:42,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 03:32:42,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 03:32:42,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 03:32:42,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 03:32:42,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 03:32:42,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 03:32:42,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 03:32:42,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 03:32:42,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 03:32:42,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 03:32:42,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 03:32:42,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-04-16 03:32:42,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 03:32:42,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 03:32:42,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 03:32:42,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 03:32:42,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 03:32:42,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 03:32:42,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 03:32:42,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 03:32:42,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 03:32:42,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 03:32:42,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 03:32:42,850 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-04-16 03:32:42,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 03:32:43,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 03:32:43,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 03:32:43,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 03:32:43,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 03:32:43,173 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 03:32:43,173 INFO L432 ainManager$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 [2021-04-16 03:32:43,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cfcdcc7/03c3f1db6971444a9d367089b1f2e156/FLAG6fecc2e1c [2021-04-16 03:32:43,591 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 03:32:43,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2021-04-16 03:32:43,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cfcdcc7/03c3f1db6971444a9d367089b1f2e156/FLAG6fecc2e1c [2021-04-16 03:32:44,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38cfcdcc7/03c3f1db6971444a9d367089b1f2e156 [2021-04-16 03:32:44,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 03:32:44,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-16 03:32:44,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 03:32:44,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 03:32:44,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 03:32:44,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a002139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44, skipping insertion in model container [2021-04-16 03:32:44,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 03:32:44,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 03:32:44,118 WARN L226 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] [2021-04-16 03:32:44,121 WARN L226 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] [2021-04-16 03:32:44,122 WARN L226 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] [2021-04-16 03:32:44,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 03:32:44,129 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 03:32:44,160 WARN L226 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] [2021-04-16 03:32:44,160 WARN L226 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] [2021-04-16 03:32:44,166 WARN L226 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] [2021-04-16 03:32:44,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 03:32:44,178 INFO L208 MainTranslator]: Completed translation [2021-04-16 03:32:44,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44 WrapperNode [2021-04-16 03:32:44,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 03:32:44,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 03:32:44,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 03:32:44,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 03:32:44,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 03:32:44,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 03:32:44,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 03:32:44,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 03:32:44,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (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 [2021-04-16 03:32:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 03:32:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 03:32:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 03:32:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 03:32:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 03:32:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 03:32:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 03:32:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 03:32:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 03:32:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 03:32:44,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 03:32:44,465 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-16 03:32:44,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:32:44 BoogieIcfgContainer [2021-04-16 03:32:44,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 03:32:44,466 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-04-16 03:32:44,467 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-04-16 03:32:44,467 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-04-16 03:32:44,469 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:32:44" (1/1) ... [2021-04-16 03:32:44,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 03:32:44 BasicIcfg [2021-04-16 03:32:44,480 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-04-16 03:32:44,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 03:32:44,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 03:32:44,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 03:32:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 03:32:44" (1/4) ... [2021-04-16 03:32:44,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bb4538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 03:32:44, skipping insertion in model container [2021-04-16 03:32:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:32:44" (2/4) ... [2021-04-16 03:32:44,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bb4538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 03:32:44, skipping insertion in model container [2021-04-16 03:32:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:32:44" (3/4) ... [2021-04-16 03:32:44,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bb4538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 03:32:44, skipping insertion in model container [2021-04-16 03:32:44,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 03:32:44" (4/4) ... [2021-04-16 03:32:44,484 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.cJordan [2021-04-16 03:32:44,487 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-04-16 03:32:44,490 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-04-16 03:32:44,499 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-16 03:32:44,511 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 03:32:44,511 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-16 03:32:44,511 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-04-16 03:32:44,511 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 03:32:44,511 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 03:32:44,511 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 03:32:44,511 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 03:32:44,511 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 03:32:44,519 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) [2021-04-16 03:32:44,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-04-16 03:32:44,523 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:32:44,523 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:32:44,524 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:32:44,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:32:44,527 INFO L82 PathProgramCache]: Analyzing trace with hash 132956993, now seen corresponding path program 1 times [2021-04-16 03:32:44,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:32:44,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042607610] [2021-04-16 03:32:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:32:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:32:44,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:44,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:44,649 INFO L142 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size [2021-04-16 03:32:44,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:32:44,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:32:44,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:32:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:32:44,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:32:44,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042607610] [2021-04-16 03:32:44,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 03:32:44,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 03:32:44,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802199257] [2021-04-16 03:32:44,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 03:32:44,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:32:44,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 03:32:44,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 03:32:44,716 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) [2021-04-16 03:32:44,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:32:44,846 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-04-16 03:32:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 03:32:44,847 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 [2021-04-16 03:32:44,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:32:44,851 INFO L225 Difference]: With dead ends: 24 [2021-04-16 03:32:44,851 INFO L226 Difference]: Without dead ends: 18 [2021-04-16 03:32:44,852 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-04-16 03:32:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-04-16 03:32:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-04-16 03:32:44,869 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) [2021-04-16 03:32:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-04-16 03:32:44,870 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2021-04-16 03:32:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:32:44,870 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-04-16 03:32:44,870 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) [2021-04-16 03:32:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-04-16 03:32:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 03:32:44,871 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:32:44,871 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:32:44,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 03:32:44,871 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:32:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:32:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1077314396, now seen corresponding path program 1 times [2021-04-16 03:32:44,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:32:44,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200431510] [2021-04-16 03:32:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:32:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:32:44,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:44,902 INFO L142 QuantifierPusher]: treesize reduction 11, result has 31.3 percent of original size [2021-04-16 03:32:44,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 03:32:44,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:32:44,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:32:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:32:44,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:44,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:32:44,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200431510] [2021-04-16 03:32:44,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 03:32:44,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 03:32:44,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234703713] [2021-04-16 03:32:44,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 03:32:44,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:32:44,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 03:32:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 03:32:44,941 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) [2021-04-16 03:32:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:32:45,011 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-04-16 03:32:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 03:32:45,011 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 [2021-04-16 03:32:45,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:32:45,012 INFO L225 Difference]: With dead ends: 17 [2021-04-16 03:32:45,012 INFO L226 Difference]: Without dead ends: 17 [2021-04-16 03:32:45,013 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-16 03:32:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-04-16 03:32:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-04-16 03:32:45,014 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) [2021-04-16 03:32:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-04-16 03:32:45,015 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-04-16 03:32:45,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:32:45,015 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-04-16 03:32:45,015 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) [2021-04-16 03:32:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-04-16 03:32:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 03:32:45,015 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:32:45,016 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:32:45,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 03:32:45,016 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:32:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:32:45,016 INFO L82 PathProgramCache]: Analyzing trace with hash -211981815, now seen corresponding path program 1 times [2021-04-16 03:32:45,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:32:45,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233963053] [2021-04-16 03:32:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:32:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:32:45,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:45,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:45,039 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 03:32:45,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 03:32:45,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:45,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 03:32:45,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:45,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:32:45,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:45,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:45,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:32:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:32:45,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:32:45,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:32:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:32:45,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233963053] [2021-04-16 03:32:45,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 03:32:45,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 03:32:45,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031014778] [2021-04-16 03:32:45,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 03:32:45,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:32:45,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 03:32:45,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 03:32:45,087 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) [2021-04-16 03:32:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:32:45,293 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-04-16 03:32:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 03:32:45,294 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 [2021-04-16 03:32:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:32:45,294 INFO L225 Difference]: With dead ends: 23 [2021-04-16 03:32:45,294 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 03:32:45,294 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-16 03:32:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 03:32:45,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 03:32:45,295 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) [2021-04-16 03:32:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 03:32:45,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-04-16 03:32:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:32:45,295 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 03:32:45,295 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) [2021-04-16 03:32:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 03:32:45,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 03:32:45,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 03:32:45,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 03:32:45 BasicIcfg [2021-04-16 03:32:45,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 03:32:45,299 INFO L168 Benchmark]: Toolchain (without parser) took 1284.15 ms. Allocated memory was 209.7 MB in the beginning and 323.0 MB in the end (delta: 113.2 MB). Free memory was 175.8 MB in the beginning and 270.0 MB in the end (delta: -94.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2021-04-16 03:32:45,300 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 209.7 MB. Free memory was 192.1 MB in the beginning and 192.0 MB in the end (delta: 74.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 03:32:45,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.61 ms. Allocated memory is still 209.7 MB. Free memory was 175.6 MB in the beginning and 192.0 MB in the end (delta: -16.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-04-16 03:32:45,300 INFO L168 Benchmark]: Boogie Preprocessor took 29.01 ms. Allocated memory is still 209.7 MB. Free memory was 192.0 MB in the beginning and 190.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-04-16 03:32:45,301 INFO L168 Benchmark]: RCFGBuilder took 257.46 ms. Allocated memory is still 209.7 MB. Free memory was 190.6 MB in the beginning and 178.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2021-04-16 03:32:45,301 INFO L168 Benchmark]: IcfgTransformer took 13.34 ms. Allocated memory is still 209.7 MB. Free memory was 178.5 MB in the beginning and 177.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 03:32:45,301 INFO L168 Benchmark]: TraceAbstraction took 817.89 ms. Allocated memory was 209.7 MB in the beginning and 323.0 MB in the end (delta: 113.2 MB). Free memory was 176.8 MB in the beginning and 270.0 MB in the end (delta: -93.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB. [2021-04-16 03:32:45,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 209.7 MB. Free memory was 192.1 MB in the beginning and 192.0 MB in the end (delta: 74.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 162.61 ms. Allocated memory is still 209.7 MB. Free memory was 175.6 MB in the beginning and 192.0 MB in the end (delta: -16.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.01 ms. Allocated memory is still 209.7 MB. Free memory was 192.0 MB in the beginning and 190.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 257.46 ms. Allocated memory is still 209.7 MB. Free memory was 190.6 MB in the beginning and 178.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. * IcfgTransformer took 13.34 ms. Allocated memory is still 209.7 MB. Free memory was 178.5 MB in the beginning and 177.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 817.89 ms. Allocated memory was 209.7 MB in the beginning and 323.0 MB in the end (delta: 113.2 MB). Free memory was 176.8 MB in the beginning and 270.0 MB in the end (delta: -93.2 MB). Peak memory consumption was 21.1 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: 786.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.1ms, AutomataDifference: 424.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 83 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 389.5ms 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: 11.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.4ms SsaConstructionTime, 42.1ms SatisfiabilityAnalysisTime, 213.4ms 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...