/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/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:56:33,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:56:33,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:56:33,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:56:33,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:56:33,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:56:33,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:56:33,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:56:33,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:56:33,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:56:33,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:56:33,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:56:33,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:56:33,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:56:33,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:56:33,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:56:33,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:56:33,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:56:33,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:56:33,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:56:33,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:56:33,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:56:33,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:56:33,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:56:33,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:56:33,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:56:33,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:56:33,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:56:33,983 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 03:56:34,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:56:34,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:56:34,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:56:34,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:56:34,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:56:34,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:56:34,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:56:34,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:56:34,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:56:34,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:56:34,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:56:34,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:56:34,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:56:34,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:56:34,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:56:34,015 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:56:34,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:56:34,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:56:34,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:56:34,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:56:34,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:56:34,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:56:34,016 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:56:34,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:56:34,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:56:34,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:56:34,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:56:34,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:56:34,530 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:56:34,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2021-02-24 03:56:34,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b824c71cb/8b03c2efbaa34f6bbba684c326bc32ae/FLAG68194c98a [2021-02-24 03:56:35,314 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:56:35,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2021-02-24 03:56:35,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b824c71cb/8b03c2efbaa34f6bbba684c326bc32ae/FLAG68194c98a [2021-02-24 03:56:35,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b824c71cb/8b03c2efbaa34f6bbba684c326bc32ae [2021-02-24 03:56:35,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:56:35,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:56:35,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:35,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:56:35,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:56:35,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:35" (1/1) ... [2021-02-24 03:56:35,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d2bf541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:35, skipping insertion in model container [2021-02-24 03:56:35,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:35" (1/1) ... [2021-02-24 03:56:35,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:56:35,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:56:35,969 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c[423,436] [2021-02-24 03:56:36,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:36,036 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:56:36,049 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c[423,436] [2021-02-24 03:56:36,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:36,100 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:56:36,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36 WrapperNode [2021-02-24 03:56:36,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:36,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:56:36,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:56:36,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:56:36,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (1/1) ... [2021-02-24 03:56:36,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (1/1) ... [2021-02-24 03:56:36,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (1/1) ... [2021-02-24 03:56:36,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (1/1) ... [2021-02-24 03:56:36,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (1/1) ... [2021-02-24 03:56:36,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (1/1) ... [2021-02-24 03:56:36,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (1/1) ... [2021-02-24 03:56:36,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:56:36,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:56:36,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:56:36,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:56:36,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (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 03:56:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:56:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:56:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:56:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 03:56:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-02-24 03:56:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-02-24 03:56:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2021-02-24 03:56:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:56:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:56:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:56:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:56:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:56:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-24 03:56:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-24 03:56:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 03:56:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-02-24 03:56:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-02-24 03:56:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2021-02-24 03:56:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:56:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:56:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:56:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:56:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:56:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:56:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:56:37,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:56:37,131 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 03:56:37,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:37 BoogieIcfgContainer [2021-02-24 03:56:37,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:56:37,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:56:37,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:56:37,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:56:37,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:56:35" (1/3) ... [2021-02-24 03:56:37,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca8199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:37, skipping insertion in model container [2021-02-24 03:56:37,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:36" (2/3) ... [2021-02-24 03:56:37,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca8199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:37, skipping insertion in model container [2021-02-24 03:56:37,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:37" (3/3) ... [2021-02-24 03:56:37,146 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2021-02-24 03:56:37,153 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:56:37,158 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:56:37,185 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:56:37,220 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:56:37,220 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:56:37,221 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:56:37,221 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:56:37,221 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:56:37,221 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:56:37,221 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:56:37,221 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:56:37,247 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2021-02-24 03:56:37,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-02-24 03:56:37,264 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:37,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:37,266 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:37,273 INFO L82 PathProgramCache]: Analyzing trace with hash -485643019, now seen corresponding path program 1 times [2021-02-24 03:56:37,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:37,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275284510] [2021-02-24 03:56:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:37,357 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:56:37,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 03:56:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 03:56:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-24 03:56:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-24 03:56:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-24 03:56:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-02-24 03:56:37,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275284510] [2021-02-24 03:56:37,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:37,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:56:37,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466927328] [2021-02-24 03:56:37,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:56:37,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:56:37,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:56:37,939 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2021-02-24 03:56:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:38,437 INFO L93 Difference]: Finished difference Result 262 states and 318 transitions. [2021-02-24 03:56:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:56:38,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2021-02-24 03:56:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:38,452 INFO L225 Difference]: With dead ends: 262 [2021-02-24 03:56:38,452 INFO L226 Difference]: Without dead ends: 134 [2021-02-24 03:56:38,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-24 03:56:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-02-24 03:56:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-02-24 03:56:38,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2021-02-24 03:56:38,530 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 108 [2021-02-24 03:56:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:38,533 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2021-02-24 03:56:38,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:56:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2021-02-24 03:56:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-24 03:56:38,537 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:38,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:38,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:56:38,538 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:38,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:38,539 INFO L82 PathProgramCache]: Analyzing trace with hash 347783644, now seen corresponding path program 1 times [2021-02-24 03:56:38,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:38,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005053104] [2021-02-24 03:56:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:38,545 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:38,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:38,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 03:56:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 03:56:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-24 03:56:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-24 03:56:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-24 03:56:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-02-24 03:56:38,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005053104] [2021-02-24 03:56:38,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:38,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 03:56:38,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75204286] [2021-02-24 03:56:38,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 03:56:38,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:38,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 03:56:38,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:38,731 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand 5 states. [2021-02-24 03:56:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:39,190 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2021-02-24 03:56:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:56:39,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2021-02-24 03:56:39,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:39,194 INFO L225 Difference]: With dead ends: 150 [2021-02-24 03:56:39,195 INFO L226 Difference]: Without dead ends: 133 [2021-02-24 03:56:39,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-24 03:56:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-02-24 03:56:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-24 03:56:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2021-02-24 03:56:39,226 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 110 [2021-02-24 03:56:39,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:39,227 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2021-02-24 03:56:39,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 03:56:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2021-02-24 03:56:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-24 03:56:39,230 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:39,230 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:39,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:56:39,230 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1662879100, now seen corresponding path program 1 times [2021-02-24 03:56:39,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:39,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990859745] [2021-02-24 03:56:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:39,235 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:39,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:39,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:39,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:39,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 03:56:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:39,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:39,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 03:56:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:39,350 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-24 03:56:39,351 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-24 03:56:39,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:56:39,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-24 03:56:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:39,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:39,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-24 03:56:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:39,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:39,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-24 03:56:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:39,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-02-24 03:56:39,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990859745] [2021-02-24 03:56:39,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:39,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 03:56:39,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527269769] [2021-02-24 03:56:39,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 03:56:39,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:39,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 03:56:39,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:39,414 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand 5 states. [2021-02-24 03:56:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:39,894 INFO L93 Difference]: Finished difference Result 271 states and 318 transitions. [2021-02-24 03:56:39,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:56:39,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2021-02-24 03:56:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:39,899 INFO L225 Difference]: With dead ends: 271 [2021-02-24 03:56:39,899 INFO L226 Difference]: Without dead ends: 174 [2021-02-24 03:56:39,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-24 03:56:39,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-02-24 03:56:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151. [2021-02-24 03:56:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-02-24 03:56:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2021-02-24 03:56:39,940 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 110 [2021-02-24 03:56:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:39,941 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2021-02-24 03:56:39,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 03:56:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2021-02-24 03:56:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-24 03:56:39,943 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:39,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:39,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:56:39,944 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1400205347, now seen corresponding path program 1 times [2021-02-24 03:56:39,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:39,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558666926] [2021-02-24 03:56:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:39,948 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:39,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:39,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:40,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 03:56:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:40,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 03:56:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:40,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:40,043 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-24 03:56:40,044 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-24 03:56:40,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:56:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 03:56:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:40,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:40,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-24 03:56:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:40,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-02-24 03:56:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:40,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-24 03:56:40,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558666926] [2021-02-24 03:56:40,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:40,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 03:56:40,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663794134] [2021-02-24 03:56:40,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 03:56:40,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:40,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 03:56:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:40,144 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand 5 states. [2021-02-24 03:56:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:40,542 INFO L93 Difference]: Finished difference Result 282 states and 331 transitions. [2021-02-24 03:56:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:56:40,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2021-02-24 03:56:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:40,545 INFO L225 Difference]: With dead ends: 282 [2021-02-24 03:56:40,545 INFO L226 Difference]: Without dead ends: 175 [2021-02-24 03:56:40,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-02-24 03:56:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2021-02-24 03:56:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-24 03:56:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 189 transitions. [2021-02-24 03:56:40,583 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 189 transitions. Word has length 113 [2021-02-24 03:56:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:40,584 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 189 transitions. [2021-02-24 03:56:40,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 03:56:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 189 transitions. [2021-02-24 03:56:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-02-24 03:56:40,586 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:40,587 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:40,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:56:40,587 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:40,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:40,588 INFO L82 PathProgramCache]: Analyzing trace with hash -136962435, now seen corresponding path program 1 times [2021-02-24 03:56:40,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:40,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394813513] [2021-02-24 03:56:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:40,600 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 03:56:40,603 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 03:56:40,722 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-02-24 03:56:40,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 03:56:40,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 03:56:40,771 WARN L141 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-02-24 03:56:40,783 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 03:56:40,788 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 03:56:40,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 03:56:40,800 WARN L147 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size 24 [2021-02-24 03:56:40,804 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size [2021-02-24 03:56:40,807 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-02-24 03:56:40,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 03:56:40,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 03:56:40,825 WARN L141 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-02-24 03:56:40,827 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 03:56:40,829 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 03:56:40,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 03:56:40,837 WARN L147 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size 28 [2021-02-24 03:56:40,840 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.1 percent of original size [2021-02-24 03:56:40,842 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.1 percent of original size 49 [2021-02-24 03:56:40,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 03:56:40,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 03:56:40,856 WARN L141 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-02-24 03:56:40,858 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 03:56:40,860 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 03:56:40,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:40,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 03:56:40,867 WARN L147 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size 24 [2021-02-24 03:56:40,870 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size [2021-02-24 03:56:40,872 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-02-24 03:56:40,876 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.accelerateNestedLoops(AcceleratedInterpolationCore.java:459) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:165) 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 03:56:40,880 INFO L168 Benchmark]: Toolchain (without parser) took 5234.68 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.7 MB in the beginning and 139.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 100.7 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:40,881 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:56:40,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.58 ms. Allocated memory is still 155.2 MB. Free memory was 130.6 MB in the beginning and 118.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:40,882 INFO L168 Benchmark]: Boogie Preprocessor took 47.70 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 116.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:40,883 INFO L168 Benchmark]: RCFGBuilder took 983.32 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 119.7 MB in the end (delta: -3.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:40,884 INFO L168 Benchmark]: TraceAbstraction took 3741.69 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 119.2 MB in the beginning and 139.8 MB in the end (delta: -20.6 MB). Peak memory consumption was 87.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:40,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 436.58 ms. Allocated memory is still 155.2 MB. Free memory was 130.6 MB in the beginning and 118.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.70 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 116.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 983.32 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 119.7 MB in the end (delta: -3.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3741.69 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 119.2 MB in the beginning and 139.8 MB in the end (delta: -20.6 MB). Peak memory consumption was 87.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.accelerateNestedLoops(AcceleratedInterpolationCore.java:459) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...