/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 19:09:57,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 19:09:57,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 19:09:57,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 19:09:57,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 19:09:57,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 19:09:57,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 19:09:57,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 19:09:57,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 19:09:57,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 19:09:57,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 19:09:57,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 19:09:57,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 19:09:57,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 19:09:57,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 19:09:57,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 19:09:57,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 19:09:57,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 19:09:57,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 19:09:57,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 19:09:57,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 19:09:57,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 19:09:57,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 19:09:57,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 19:09:57,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 19:09:57,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 19:09:57,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 19:09:57,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 19:09:57,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 19:09:57,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 19:09:57,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 19:09:57,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 19:09:57,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 19:09:57,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 19:09:57,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 19:09:57,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 19:09:57,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 19:09:57,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 19:09:57,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 19:09:57,305 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 19:09:57,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 19:09:57,305 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 19:09:57,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 19:09:57,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 19:09:57,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 19:09:57,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 19:09:57,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 19:09:57,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 19:09:57,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 19:09:57,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 19:09:57,307 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 19:09:57,307 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 19:09:57,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 19:09:57,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 19:09:57,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 19:09:57,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 19:09:57,621 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 19:09:57,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max.c [2021-05-02 19:09:57,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf8f1eadf/df34133e301c46efa157d74ced3be322/FLAGd3e2557dc [2021-05-02 19:09:58,179 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 19:09:58,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c [2021-05-02 19:09:58,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf8f1eadf/df34133e301c46efa157d74ced3be322/FLAGd3e2557dc [2021-05-02 19:09:58,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf8f1eadf/df34133e301c46efa157d74ced3be322 [2021-05-02 19:09:58,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 19:09:58,659 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 19:09:58,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 19:09:58,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 19:09:58,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 19:09:58,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:58,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9af5c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58, skipping insertion in model container [2021-05-02 19:09:58,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:58,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 19:09:58,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 19:09:58,847 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2021-05-02 19:09:58,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:09:58,876 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 19:09:58,934 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2021-05-02 19:09:58,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:09:58,967 INFO L208 MainTranslator]: Completed translation [2021-05-02 19:09:58,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58 WrapperNode [2021-05-02 19:09:58,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 19:09:58,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 19:09:58,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 19:09:58,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 19:09:58,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:58,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:58,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:58,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:59,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:59,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:59,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (1/1) ... [2021-05-02 19:09:59,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 19:09:59,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 19:09:59,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 19:09:59,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 19:09:59,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (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 [2021-05-02 19:09:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 19:09:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 19:09:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 19:09:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 19:09:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 19:09:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 19:09:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-05-02 19:09:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-05-02 19:09:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-05-02 19:09:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 19:09:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 19:09:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 19:09:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 19:09:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 19:09:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 19:09:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 19:09:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 19:09:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-02 19:09:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-05-02 19:09:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 19:09:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 19:09:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 19:09:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 19:09:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 19:09:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 19:09:59,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 19:09:59,490 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 19:09:59,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:59 BoogieIcfgContainer [2021-05-02 19:09:59,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 19:09:59,494 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 19:09:59,494 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 19:09:59,495 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 19:09:59,497 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:59" (1/1) ... [2021-05-02 19:09:59,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:09:59 BasicIcfg [2021-05-02 19:09:59,517 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 19:09:59,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 19:09:59,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 19:09:59,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 19:09:59,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 07:09:58" (1/4) ... [2021-05-02 19:09:59,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287a9511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:09:59, skipping insertion in model container [2021-05-02 19:09:59,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:58" (2/4) ... [2021-05-02 19:09:59,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287a9511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:09:59, skipping insertion in model container [2021-05-02 19:09:59,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:59" (3/4) ... [2021-05-02 19:09:59,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287a9511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:09:59, skipping insertion in model container [2021-05-02 19:09:59,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:09:59" (4/4) ... [2021-05-02 19:09:59,527 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.cJordan [2021-05-02 19:09:59,532 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 19:09:59,536 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 19:09:59,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 19:09:59,576 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 19:09:59,576 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 19:09:59,576 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 19:09:59,577 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 19:09:59,577 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 19:09:59,577 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 19:09:59,577 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 19:09:59,577 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 19:09:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 19:09:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 19:09:59,597 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:59,598 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:59,598 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:59,603 INFO L82 PathProgramCache]: Analyzing trace with hash 64952803, now seen corresponding path program 1 times [2021-05-02 19:09:59,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:59,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003889470] [2021-05-02 19:09:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:59,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:09:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 19:09:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:59,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 19:09:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 19:09:59,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:59,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003889470] [2021-05-02 19:09:59,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003889470] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:09:59,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:09:59,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 19:09:59,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798653963] [2021-05-02 19:09:59,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 19:09:59,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:59,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 19:09:59,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 19:09:59,924 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 19:10:00,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:00,116 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-05-02 19:10:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 19:10:00,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 19:10:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:00,125 INFO L225 Difference]: With dead ends: 39 [2021-05-02 19:10:00,125 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 19:10:00,126 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 19:10:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 19:10:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 19:10:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 19:10:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-05-02 19:10:00,160 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 29 [2021-05-02 19:10:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:00,161 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-05-02 19:10:00,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 19:10:00,161 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-05-02 19:10:00,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 19:10:00,162 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:00,162 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:00,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 19:10:00,164 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:00,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:00,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2146770526, now seen corresponding path program 1 times [2021-05-02 19:10:00,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:00,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785989205] [2021-05-02 19:10:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:10:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:00,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 19:10:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:00,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 19:10:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 19:10:00,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:00,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785989205] [2021-05-02 19:10:00,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785989205] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:10:00,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:10:00,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-02 19:10:00,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184249180] [2021-05-02 19:10:00,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 19:10:00,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:00,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 19:10:00,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-05-02 19:10:00,472 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 19:10:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:00,862 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 19:10:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 19:10:00,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 19:10:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:00,864 INFO L225 Difference]: With dead ends: 38 [2021-05-02 19:10:00,865 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 19:10:00,868 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 306.8ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-05-02 19:10:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 19:10:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 19:10:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 19:10:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 19:10:00,878 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 29 [2021-05-02 19:10:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:00,879 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 19:10:00,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 19:10:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 19:10:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 19:10:00,880 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:00,881 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:00,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 19:10:00,881 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:00,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:00,882 INFO L82 PathProgramCache]: Analyzing trace with hash -359953696, now seen corresponding path program 1 times [2021-05-02 19:10:00,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:00,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232826066] [2021-05-02 19:10:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:01,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:10:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 19:10:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 19:10:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 19:10:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 19:10:01,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:01,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232826066] [2021-05-02 19:10:01,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232826066] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:10:01,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:10:01,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 19:10:01,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459200467] [2021-05-02 19:10:01,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 19:10:01,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:01,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 19:10:01,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-05-02 19:10:01,061 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 19:10:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:01,392 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-05-02 19:10:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 19:10:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-05-02 19:10:01,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:01,393 INFO L225 Difference]: With dead ends: 36 [2021-05-02 19:10:01,393 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 19:10:01,394 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 272.4ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-05-02 19:10:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 19:10:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 19:10:01,394 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) [2021-05-02 19:10:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 19:10:01,394 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-02 19:10:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:01,394 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 19:10:01,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 19:10:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 19:10:01,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 19:10:01,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 19:10:01,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:10:01 BasicIcfg [2021-05-02 19:10:01,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 19:10:01,400 INFO L168 Benchmark]: Toolchain (without parser) took 2741.00 ms. Allocated memory was 180.4 MB in the beginning and 245.4 MB in the end (delta: 65.0 MB). Free memory was 145.8 MB in the beginning and 219.1 MB in the end (delta: -73.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:10:01,400 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 180.4 MB. Free memory is still 162.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:10:01,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.12 ms. Allocated memory is still 180.4 MB. Free memory was 145.6 MB in the beginning and 163.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:01,401 INFO L168 Benchmark]: Boogie Preprocessor took 45.27 ms. Allocated memory is still 180.4 MB. Free memory was 163.5 MB in the beginning and 161.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:01,401 INFO L168 Benchmark]: RCFGBuilder took 477.61 ms. Allocated memory is still 180.4 MB. Free memory was 161.7 MB in the beginning and 144.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:01,402 INFO L168 Benchmark]: IcfgTransformer took 22.98 ms. Allocated memory is still 180.4 MB. Free memory was 144.6 MB in the beginning and 143.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:01,402 INFO L168 Benchmark]: TraceAbstraction took 1880.24 ms. Allocated memory was 180.4 MB in the beginning and 245.4 MB in the end (delta: 65.0 MB). Free memory was 142.8 MB in the beginning and 219.1 MB in the end (delta: -76.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:10:01,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 180.4 MB. Free memory is still 162.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.12 ms. Allocated memory is still 180.4 MB. Free memory was 145.6 MB in the beginning and 163.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.27 ms. Allocated memory is still 180.4 MB. Free memory was 163.5 MB in the beginning and 161.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 477.61 ms. Allocated memory is still 180.4 MB. Free memory was 161.7 MB in the beginning and 144.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 22.98 ms. Allocated memory is still 180.4 MB. Free memory was 144.6 MB in the beginning and 143.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1880.24 ms. Allocated memory was 180.4 MB in the beginning and 245.4 MB in the end (delta: 65.0 MB). Free memory was 142.8 MB in the beginning and 219.1 MB in the end (delta: -76.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1821.7ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 12.9ms, AutomataDifference: 945.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 88 SDtfs, 121 SDslu, 150 SDs, 0 SdLazy, 423 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 378.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 664.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.9ms SsaConstructionTime, 101.1ms SatisfiabilityAnalysisTime, 591.0ms InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...