/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:49:19,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:49:19,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:49:19,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:49:20,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:49:20,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:49:20,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:49:20,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:49:20,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:49:20,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:49:20,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:49:20,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:49:20,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:49:20,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:49:20,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:49:20,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:49:20,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:49:20,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:49:20,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:49:20,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:49:20,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:49:20,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:49:20,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:49:20,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:49:20,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:49:20,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:49:20,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:49:20,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:49:20,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:49:20,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:49:20,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:49:20,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:49:20,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:49:20,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:49:20,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:49:20,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:49:20,080 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:49:20,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:49:20,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:49:20,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:49:20,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:49:20,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:49:20,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:49:20,090 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:49:20,090 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:49:20,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:49:20,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:49:20,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:49:20,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:49:20,510 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:49:20,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-02-24 04:49:20,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47d2cb58/a04243c1b17d4ea390c9bfeecefa2b06/FLAG2c222fa88 [2021-02-24 04:49:21,188 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:49:21,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-02-24 04:49:21,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47d2cb58/a04243c1b17d4ea390c9bfeecefa2b06/FLAG2c222fa88 [2021-02-24 04:49:21,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47d2cb58/a04243c1b17d4ea390c9bfeecefa2b06 [2021-02-24 04:49:21,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:49:21,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:49:21,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:49:21,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:49:21,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:49:21,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5240fac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21, skipping insertion in model container [2021-02-24 04:49:21,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:49:21,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:49:21,904 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-02-24 04:49:21,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:49:21,918 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:49:21,936 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-02-24 04:49:21,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:49:21,955 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:49:21,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21 WrapperNode [2021-02-24 04:49:21,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:49:21,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:49:21,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:49:21,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:49:21,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (1/1) ... [2021-02-24 04:49:21,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:49:21,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:49:21,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:49:21,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:49:21,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (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 [2021-02-24 04:49:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:49:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:49:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:49:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:49:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:49:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:49:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:49:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:49:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:49:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:49:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:49:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:49:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:49:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:49:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:49:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:49:22,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:49:22,517 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:49:22,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:49:22 BoogieIcfgContainer [2021-02-24 04:49:22,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:49:22,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:49:22,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:49:22,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:49:22,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:49:21" (1/3) ... [2021-02-24 04:49:22,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3a1cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:49:22, skipping insertion in model container [2021-02-24 04:49:22,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:21" (2/3) ... [2021-02-24 04:49:22,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3a1cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:49:22, skipping insertion in model container [2021-02-24 04:49:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:49:22" (3/3) ... [2021-02-24 04:49:22,542 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-02-24 04:49:22,559 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:49:22,563 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:49:22,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:49:22,659 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:49:22,660 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:49:22,660 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:49:22,661 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:49:22,662 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:49:22,662 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:49:22,662 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:49:22,662 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:49:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-24 04:49:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:49:22,703 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:49:22,704 INFO L422 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] [2021-02-24 04:49:22,704 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:49:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:49:22,709 INFO L82 PathProgramCache]: Analyzing trace with hash -415268847, now seen corresponding path program 1 times [2021-02-24 04:49:22,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:49:22,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602135871] [2021-02-24 04:49:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:49:22,798 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:49:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:23,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:23,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:49:23,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:49:23,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:49:23,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:49:23,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:49:23,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:49:23,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:49:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:23,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:23,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:49:23,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602135871] [2021-02-24 04:49:23,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:49:23,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:49:23,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105553894] [2021-02-24 04:49:23,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:49:23,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:49:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:49:23,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:49:23,437 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 9 states. [2021-02-24 04:49:23,926 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-02-24 04:49:24,197 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-24 04:49:24,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:49:24,511 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-02-24 04:49:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 04:49:24,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2021-02-24 04:49:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:49:24,523 INFO L225 Difference]: With dead ends: 73 [2021-02-24 04:49:24,524 INFO L226 Difference]: Without dead ends: 44 [2021-02-24 04:49:24,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-02-24 04:49:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-24 04:49:24,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-02-24 04:49:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-24 04:49:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-02-24 04:49:24,582 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2021-02-24 04:49:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:49:24,583 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-02-24 04:49:24,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:49:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-02-24 04:49:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 04:49:24,585 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:49:24,585 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:49:24,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:49:24,586 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:49:24,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:49:24,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1860062218, now seen corresponding path program 1 times [2021-02-24 04:49:24,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:49:24,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985357619] [2021-02-24 04:49:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:49:24,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:24,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:49:24,646 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: cannot bring into simultaneous update form, v_~__tmp_55_0~0_9 has two outvars in equality [(= v_main_~main____CPAchecker_TMP_0~0_4 v_~__tmp_55_0~0_10), (= v_main_~main____CPAchecker_TMP_0~1_3 v_~__tmp_55_0~0_9), (= (+ v_main_~main__x~0_12 v_main_~main__y~0_17) v_main_~main__x~0_11), (< v_main_~main__x~0_12 0), (= (+ v_main_~main__y~0_17 1) v_main_~main__y~0_16), (= v_main_~main____CPAchecker_TMP_0~1_3 v_main_~main__y~0_17)] at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.extractUpdateRhs(SimultaneousUpdate.java:154) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.(SimultaneousUpdate.java:104) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.werner.LoopAcceleratorLite.calculateSymbolicMemory(LoopAcceleratorLite.java:167) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.werner.LoopAcceleratorLite.summarizeLoop(LoopAcceleratorLite.java:105) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:52) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 04:49:24,651 INFO L168 Benchmark]: Toolchain (without parser) took 3043.63 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 132.1 MB in the beginning and 139.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:24,652 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:49:24,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.95 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:24,654 INFO L168 Benchmark]: Boogie Preprocessor took 35.12 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 120.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:24,655 INFO L168 Benchmark]: RCFGBuilder took 532.46 ms. Allocated memory is still 156.2 MB. Free memory was 119.7 MB in the beginning and 103.4 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:24,655 INFO L168 Benchmark]: TraceAbstraction took 2122.77 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 102.9 MB in the beginning and 139.4 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:49:24,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.95 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.12 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 120.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 532.46 ms. Allocated memory is still 156.2 MB. Free memory was 119.7 MB in the beginning and 103.4 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2122.77 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 102.9 MB in the beginning and 139.4 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: cannot bring into simultaneous update form, v_~__tmp_55_0~0_9 has two outvars in equality [(= v_main_~main____CPAchecker_TMP_0~0_4 v_~__tmp_55_0~0_10), (= v_main_~main____CPAchecker_TMP_0~1_3 v_~__tmp_55_0~0_9), (= (+ v_main_~main__x~0_12 v_main_~main__y~0_17) v_main_~main__x~0_11), (< v_main_~main__x~0_12 0), (= (+ v_main_~main__y~0_17 1) v_main_~main__y~0_16), (= v_main_~main____CPAchecker_TMP_0~1_3 v_main_~main__y~0_17)] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: cannot bring into simultaneous update form, v_~__tmp_55_0~0_9 has two outvars in equality [(= v_main_~main____CPAchecker_TMP_0~0_4 v_~__tmp_55_0~0_10), (= v_main_~main____CPAchecker_TMP_0~1_3 v_~__tmp_55_0~0_9), (= (+ v_main_~main__x~0_12 v_main_~main__y~0_17) v_main_~main__x~0_11), (< v_main_~main__x~0_12 0), (= (+ v_main_~main__y~0_17 1) v_main_~main__y~0_16), (= v_main_~main____CPAchecker_TMP_0~1_3 v_main_~main__y~0_17)]: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...