/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/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 05:37:04,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 05:37:04,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 05:37:04,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 05:37:04,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 05:37:04,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 05:37:04,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 05:37:04,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 05:37:04,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 05:37:04,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 05:37:04,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 05:37:04,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 05:37:04,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 05:37:04,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 05:37:04,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 05:37:04,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 05:37:04,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 05:37:04,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 05:37:04,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 05:37:04,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 05:37:04,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 05:37:04,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 05:37:04,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 05:37:04,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 05:37:04,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 05:37:04,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 05:37:04,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 05:37:04,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 05:37:04,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 05:37:04,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 05:37:04,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 05:37:04,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 05:37:04,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 05:37:04,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 05:37:04,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 05:37:04,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 05:37:04,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 05:37:04,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 05:37:04,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 05:37:04,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:37:04,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 05:37:04,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 05:37:04,297 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 05:37:04,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 05:37:04,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 05:37:04,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 05:37:04,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 05:37:04,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 05:37:04,553 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 05:37:04,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2021-05-06 05:37:04,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32009a75d/381edd742fa9490da284c08ed441b2c2/FLAG9492b0c8a [2021-05-06 05:37:04,913 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 05:37:04,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2021-05-06 05:37:04,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32009a75d/381edd742fa9490da284c08ed441b2c2/FLAG9492b0c8a [2021-05-06 05:37:05,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32009a75d/381edd742fa9490da284c08ed441b2c2 [2021-05-06 05:37:05,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 05:37:05,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 05:37:05,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 05:37:05,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 05:37:05,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 05:37:05,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5caa3cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05, skipping insertion in model container [2021-05-06 05:37:05,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 05:37:05,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 05:37:05,467 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c[333,346] [2021-05-06 05:37:05,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:37:05,479 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 05:37:05,486 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c[333,346] [2021-05-06 05:37:05,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:37:05,499 INFO L208 MainTranslator]: Completed translation [2021-05-06 05:37:05,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05 WrapperNode [2021-05-06 05:37:05,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 05:37:05,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 05:37:05,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 05:37:05,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 05:37:05,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 05:37:05,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 05:37:05,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 05:37:05,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 05:37:05,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (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 05:37:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 05:37:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 05:37:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 05:37:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 05:37:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-05-06 05:37:05,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 05:37:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 05:37:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 05:37:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 05:37:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 05:37:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 05:37:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-05-06 05:37:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 05:37:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 05:37:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 05:37:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 05:37:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 05:37:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 05:37:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 05:37:05,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 05:37:05,879 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 05:37:05,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:37:05 BoogieIcfgContainer [2021-05-06 05:37:05,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 05:37:05,881 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 05:37:05,881 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 05:37:05,882 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 05:37:05,884 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:37:05" (1/1) ... [2021-05-06 05:37:05,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:37:05 BasicIcfg [2021-05-06 05:37:05,910 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 05:37:05,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 05:37:05,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 05:37:05,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 05:37:05,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 05:37:05" (1/4) ... [2021-05-06 05:37:05,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a05fc07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:37:05, skipping insertion in model container [2021-05-06 05:37:05,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:37:05" (2/4) ... [2021-05-06 05:37:05,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a05fc07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:37:05, skipping insertion in model container [2021-05-06 05:37:05,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:37:05" (3/4) ... [2021-05-06 05:37:05,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a05fc07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:37:05, skipping insertion in model container [2021-05-06 05:37:05,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:37:05" (4/4) ... [2021-05-06 05:37:05,916 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.cJordan [2021-05-06 05:37:05,921 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 05:37:05,926 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 05:37:05,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 05:37:05,960 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 05:37:05,960 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 05:37:05,960 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 05:37:05,960 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 05:37:05,960 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 05:37:05,961 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 05:37:05,961 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 05:37:05,961 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 05:37:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 05:37:05,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-05-06 05:37:05,984 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:37:05,984 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:37:05,985 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:37:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:37:05,989 INFO L82 PathProgramCache]: Analyzing trace with hash -459487812, now seen corresponding path program 1 times [2021-05-06 05:37:05,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:37:05,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541925266] [2021-05-06 05:37:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:37:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:37:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:37:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:37:06,195 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 05:37:06,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:37:06,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541925266] [2021-05-06 05:37:06,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541925266] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:37:06,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:37:06,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 05:37:06,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824734603] [2021-05-06 05:37:06,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 05:37:06,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:37:06,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 05:37:06,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 05:37:06,209 INFO L87 Difference]: Start difference. First operand has 23 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:37:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:37:06,252 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-05-06 05:37:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 05:37:06,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-05-06 05:37:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:37:06,259 INFO L225 Difference]: With dead ends: 19 [2021-05-06 05:37:06,259 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 05:37:06,261 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 05:37:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 05:37:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-05-06 05:37:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:37:06,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-06 05:37:06,283 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-05-06 05:37:06,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:37:06,284 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-06 05:37:06,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:37:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-06 05:37:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 05:37:06,284 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:37:06,284 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:37:06,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 05:37:06,285 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:37:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:37:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2132896698, now seen corresponding path program 1 times [2021-05-06 05:37:06,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:37:06,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376152372] [2021-05-06 05:37:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:37:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:37:06,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:37:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:37:06,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 05:37:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:37:06,376 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 05:37:06,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:37:06,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376152372] [2021-05-06 05:37:06,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376152372] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:37:06,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:37:06,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 05:37:06,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661469132] [2021-05-06 05:37:06,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 05:37:06,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:37:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 05:37:06,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 05:37:06,379 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 05:37:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:37:06,511 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-05-06 05:37:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 05:37:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-05-06 05:37:06,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:37:06,512 INFO L225 Difference]: With dead ends: 15 [2021-05-06 05:37:06,512 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 05:37:06,512 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-05-06 05:37:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 05:37:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 05:37:06,513 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 05:37:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 05:37:06,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-06 05:37:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:37:06,513 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 05:37:06,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 05:37:06,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 05:37:06,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 05:37:06,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 05:37:06,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:37:06 BasicIcfg [2021-05-06 05:37:06,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 05:37:06,518 INFO L168 Benchmark]: Toolchain (without parser) took 1154.09 ms. Allocated memory is still 210.8 MB. Free memory was 175.6 MB in the beginning and 114.3 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.5 MB. Max. memory is 8.0 GB. [2021-05-06 05:37:06,518 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 210.8 MB. Free memory is still 192.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:37:06,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.77 ms. Allocated memory is still 210.8 MB. Free memory was 175.4 MB in the beginning and 166.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 05:37:06,519 INFO L168 Benchmark]: Boogie Preprocessor took 70.30 ms. Allocated memory is still 210.8 MB. Free memory was 166.2 MB in the beginning and 194.5 MB in the end (delta: -28.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2021-05-06 05:37:06,519 INFO L168 Benchmark]: RCFGBuilder took 308.60 ms. Allocated memory is still 210.8 MB. Free memory was 194.0 MB in the beginning and 180.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 05:37:06,520 INFO L168 Benchmark]: IcfgTransformer took 29.24 ms. Allocated memory is still 210.8 MB. Free memory was 180.3 MB in the beginning and 178.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 05:37:06,520 INFO L168 Benchmark]: TraceAbstraction took 605.71 ms. Allocated memory is still 210.8 MB. Free memory was 178.8 MB in the beginning and 114.3 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2021-05-06 05:37:06,523 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 210.8 MB. Free memory is still 192.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 134.77 ms. Allocated memory is still 210.8 MB. Free memory was 175.4 MB in the beginning and 166.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.30 ms. Allocated memory is still 210.8 MB. Free memory was 166.2 MB in the beginning and 194.5 MB in the end (delta: -28.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 308.60 ms. Allocated memory is still 210.8 MB. Free memory was 194.0 MB in the beginning and 180.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 29.24 ms. Allocated memory is still 210.8 MB. Free memory was 180.3 MB in the beginning and 178.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 605.71 ms. Allocated memory is still 210.8 MB. Free memory was 178.8 MB in the beginning and 114.3 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 555.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 15.1ms, AutomataDifference: 193.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 23 SDslu, 17 SDs, 0 SdLazy, 28 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 169.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.6ms SsaConstructionTime, 37.7ms SatisfiabilityAnalysisTime, 195.7ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...