/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 05:53:10,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 05:53:10,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 05:53:10,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 05:53:10,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 05:53:10,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 05:53:10,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 05:53:10,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 05:53:10,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 05:53:10,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 05:53:10,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 05:53:10,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 05:53:10,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 05:53:10,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 05:53:10,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 05:53:10,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 05:53:10,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 05:53:10,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 05:53:10,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 05:53:10,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 05:53:10,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 05:53:10,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 05:53:10,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 05:53:10,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 05:53:10,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 05:53:10,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 05:53:10,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 05:53:10,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 05:53:10,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 05:53:10,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 05:53:10,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 05:53:10,558 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 05:53:10,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 05:53:10,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 05:53:10,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 05:53:10,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 05:53:10,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 05:53:10,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 05:53:10,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 05:53:10,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:53:10,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 05:53:10,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 05:53:10,560 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 05:53:10,560 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 05:53:10,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 05:53:10,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 05:53:10,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 05:53:10,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 05:53:10,834 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 05:53:10,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c [2021-05-06 05:53:10,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ae163fb/b74f475cd0cb4e90a3d532d77f8fe211/FLAGd7b3890aa [2021-05-06 05:53:11,322 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 05:53:11,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c [2021-05-06 05:53:11,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ae163fb/b74f475cd0cb4e90a3d532d77f8fe211/FLAGd7b3890aa [2021-05-06 05:53:11,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ae163fb/b74f475cd0cb4e90a3d532d77f8fe211 [2021-05-06 05:53:11,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 05:53:11,350 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 05:53:11,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 05:53:11,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 05:53:11,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 05:53:11,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:11,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391e6cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11, skipping insertion in model container [2021-05-06 05:53:11,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:11,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 05:53:11,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 05:53:11,761 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c[34383,34396] [2021-05-06 05:53:11,786 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c[39106,39119] [2021-05-06 05:53:11,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:53:11,811 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 05:53:11,936 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c[34383,34396] [2021-05-06 05:53:11,946 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c[39106,39119] [2021-05-06 05:53:11,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:53:11,976 INFO L208 MainTranslator]: Completed translation [2021-05-06 05:53:11,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11 WrapperNode [2021-05-06 05:53:11,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 05:53:11,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 05:53:11,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 05:53:11,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 05:53:11,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:11,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:11,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:11,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:12,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:12,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:12,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (1/1) ... [2021-05-06 05:53:12,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 05:53:12,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 05:53:12,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 05:53:12,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 05:53:12,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:53:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 05:53:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 05:53:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 05:53:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 05:53:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 05:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 05:53:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 05:53:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 05:53:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 05:53:13,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 05:53:13,014 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 05:53:13,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:53:13 BoogieIcfgContainer [2021-05-06 05:53:13,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 05:53:13,016 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 05:53:13,016 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 05:53:13,017 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 05:53:13,018 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:53:13" (1/1) ... [2021-05-06 05:53:13,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:53:13 BasicIcfg [2021-05-06 05:53:13,048 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 05:53:13,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 05:53:13,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 05:53:13,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 05:53:13,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 05:53:11" (1/4) ... [2021-05-06 05:53:13,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4d7f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:53:13, skipping insertion in model container [2021-05-06 05:53:13,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:11" (2/4) ... [2021-05-06 05:53:13,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4d7f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:53:13, skipping insertion in model container [2021-05-06 05:53:13,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:53:13" (3/4) ... [2021-05-06 05:53:13,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4d7f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:53:13, skipping insertion in model container [2021-05-06 05:53:13,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:53:13" (4/4) ... [2021-05-06 05:53:13,054 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.p+sep-reducer.cJordan [2021-05-06 05:53:13,059 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 05:53:13,061 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-05-06 05:53:13,071 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-06 05:53:13,088 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 05:53:13,088 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 05:53:13,088 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 05:53:13,088 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 05:53:13,088 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 05:53:13,088 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 05:53:13,088 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 05:53:13,088 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 05:53:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 245 states have (on average 1.9714285714285715) internal successors, (483), 247 states have internal predecessors, (483), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:53:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-06 05:53:13,119 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:53:13,120 INFO L523 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2021-05-06 05:53:13,120 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:53:13,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:53:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1372143926, now seen corresponding path program 1 times [2021-05-06 05:53:13,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:53:13,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534327538] [2021-05-06 05:53:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:53:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:53:13,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:53:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:53:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:53:13,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:53:13,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534327538] [2021-05-06 05:53:13,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534327538] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:53:13,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:53:13,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 05:53:13,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707863710] [2021-05-06 05:53:13,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 05:53:13,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:53:13,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 05:53:13,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:53:13,561 INFO L87 Difference]: Start difference. First operand has 252 states, 245 states have (on average 1.9714285714285715) internal successors, (483), 247 states have internal predecessors, (483), 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 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:53:14,633 INFO L93 Difference]: Finished difference Result 263 states and 497 transitions. [2021-05-06 05:53:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 05:53:14,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 138 [2021-05-06 05:53:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:53:14,641 INFO L225 Difference]: With dead ends: 263 [2021-05-06 05:53:14,641 INFO L226 Difference]: Without dead ends: 253 [2021-05-06 05:53:14,642 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 177.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-06 05:53:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-05-06 05:53:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 246. [2021-05-06 05:53:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 1.1570247933884297) internal successors, (280), 242 states have internal predecessors, (280), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 283 transitions. [2021-05-06 05:53:14,673 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 283 transitions. Word has length 138 [2021-05-06 05:53:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:53:14,674 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 283 transitions. [2021-05-06 05:53:14,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:14,674 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 283 transitions. [2021-05-06 05:53:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-06 05:53:14,676 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:53:14,676 INFO L523 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2021-05-06 05:53:14,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 05:53:14,677 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:53:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:53:14,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1813108825, now seen corresponding path program 1 times [2021-05-06 05:53:14,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:53:14,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447757686] [2021-05-06 05:53:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:53:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:53:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:53:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:53:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:53:14,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:53:14,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447757686] [2021-05-06 05:53:14,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447757686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:53:14,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:53:14,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 05:53:14,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113930105] [2021-05-06 05:53:14,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 05:53:14,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:53:14,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 05:53:14,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:53:14,771 INFO L87 Difference]: Start difference. First operand 246 states and 283 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:53:15,463 INFO L93 Difference]: Finished difference Result 256 states and 296 transitions. [2021-05-06 05:53:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 05:53:15,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 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 139 [2021-05-06 05:53:15,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:53:15,465 INFO L225 Difference]: With dead ends: 256 [2021-05-06 05:53:15,465 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 05:53:15,465 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 185.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-06 05:53:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 05:53:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 05:53:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 05:53:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 05:53:15,466 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2021-05-06 05:53:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:53:15,466 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 05:53:15,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 05:53:15,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 05:53:15,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 05:53:15,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:53:15 BasicIcfg [2021-05-06 05:53:15,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 05:53:15,471 INFO L168 Benchmark]: Toolchain (without parser) took 4120.47 ms. Allocated memory was 172.0 MB in the beginning and 303.0 MB in the end (delta: 131.1 MB). Free memory was 136.4 MB in the beginning and 269.2 MB in the end (delta: -132.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:53:15,471 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 172.0 MB. Free memory is still 154.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:53:15,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.43 ms. Allocated memory is still 172.0 MB. Free memory was 136.2 MB in the beginning and 136.4 MB in the end (delta: -223.0 kB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:15,472 INFO L168 Benchmark]: Boogie Preprocessor took 53.91 ms. Allocated memory is still 172.0 MB. Free memory was 135.9 MB in the beginning and 131.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:15,472 INFO L168 Benchmark]: RCFGBuilder took 984.20 ms. Allocated memory was 172.0 MB in the beginning and 220.2 MB in the end (delta: 48.2 MB). Free memory was 131.7 MB in the beginning and 190.9 MB in the end (delta: -59.2 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:15,473 INFO L168 Benchmark]: IcfgTransformer took 31.67 ms. Allocated memory is still 220.2 MB. Free memory was 190.9 MB in the beginning and 186.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:15,473 INFO L168 Benchmark]: TraceAbstraction took 2421.33 ms. Allocated memory was 220.2 MB in the beginning and 303.0 MB in the end (delta: 82.8 MB). Free memory was 186.2 MB in the beginning and 269.2 MB in the end (delta: -83.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:53:15,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 172.0 MB. Free memory is still 154.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 623.43 ms. Allocated memory is still 172.0 MB. Free memory was 136.2 MB in the beginning and 136.4 MB in the end (delta: -223.0 kB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.91 ms. Allocated memory is still 172.0 MB. Free memory was 135.9 MB in the beginning and 131.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 984.20 ms. Allocated memory was 172.0 MB in the beginning and 220.2 MB in the end (delta: 48.2 MB). Free memory was 131.7 MB in the beginning and 190.9 MB in the end (delta: -59.2 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. * IcfgTransformer took 31.67 ms. Allocated memory is still 220.2 MB. Free memory was 190.9 MB in the beginning and 186.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2421.33 ms. Allocated memory was 220.2 MB in the beginning and 303.0 MB in the end (delta: 82.8 MB). Free memory was 186.2 MB in the beginning and 269.2 MB in the end (delta: -83.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2003]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 2312]: 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, 252 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2380.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 22.0ms, AutomataDifference: 1787.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 187 SDtfs, 1469 SDslu, 42 SDs, 0 SdLazy, 1973 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1113.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 362.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.8ms SsaConstructionTime, 124.5ms SatisfiabilityAnalysisTime, 319.0ms InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 677 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...