/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_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:56:31,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:56:31,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:56:31,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:56:31,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:56:31,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:56:31,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:56:31,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:56:31,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:56:31,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:56:31,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:56:31,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:56:31,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:56:31,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:56:31,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:56:31,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:56:31,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:56:31,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:56:31,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:56:31,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:56:31,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:56:31,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:56:31,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:56:31,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:56:31,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:56:31,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:56:31,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:56:31,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:56:31,314 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 03:56:31,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:56:31,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:56:31,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:56:31,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:56:31,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:56:31,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:56:31,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:56:31,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:56:31,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:56:31,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:56:31,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:56:31,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:56:31,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:56:31,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:56:31,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:56:31,331 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:56:31,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:56:31,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:56:31,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:56:31,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:56:31,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:56:31,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:56:31,333 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:56:31,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:56:31,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:56:31,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:56:31,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:56:31,742 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:56:31,743 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:56:31,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2021-02-24 03:56:31,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a03f6b0/19ed481d4748418982e5c77b309ad63a/FLAG667ef360a [2021-02-24 03:56:32,571 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:56:32,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2021-02-24 03:56:32,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a03f6b0/19ed481d4748418982e5c77b309ad63a/FLAG667ef360a [2021-02-24 03:56:32,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a03f6b0/19ed481d4748418982e5c77b309ad63a [2021-02-24 03:56:32,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:56:32,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:56:32,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:32,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:56:32,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:56:32,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:32" (1/1) ... [2021-02-24 03:56:32,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bec16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:32, skipping insertion in model container [2021-02-24 03:56:32,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:32" (1/1) ... [2021-02-24 03:56:32,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:56:33,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:56:33,200 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_2a.c.cil.c[423,436] [2021-02-24 03:56:33,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:33,275 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:56:33,290 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_2a.c.cil.c[423,436] [2021-02-24 03:56:33,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:33,349 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:56:33,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33 WrapperNode [2021-02-24 03:56:33,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:33,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:56:33,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:56:33,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:56:33,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (1/1) ... [2021-02-24 03:56:33,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (1/1) ... [2021-02-24 03:56:33,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (1/1) ... [2021-02-24 03:56:33,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (1/1) ... [2021-02-24 03:56:33,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (1/1) ... [2021-02-24 03:56:33,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (1/1) ... [2021-02-24 03:56:33,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (1/1) ... [2021-02-24 03:56:33,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:56:33,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:56:33,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:56:33,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:56:33,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (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 03:56:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:56:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:56:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:56:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 03:56:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-02-24 03:56:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-02-24 03:56:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2021-02-24 03:56:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:56:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:56:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:56:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:56:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:56:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-24 03:56:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-24 03:56:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 03:56:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-02-24 03:56:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-02-24 03:56:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2021-02-24 03:56:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:56:33,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:56:33,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:56:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:56:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:56:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:56:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:56:34,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:56:34,441 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 03:56:34,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:34 BoogieIcfgContainer [2021-02-24 03:56:34,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:56:34,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:56:34,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:56:34,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:56:34,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:56:32" (1/3) ... [2021-02-24 03:56:34,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260891c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:34, skipping insertion in model container [2021-02-24 03:56:34,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:33" (2/3) ... [2021-02-24 03:56:34,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260891c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:34, skipping insertion in model container [2021-02-24 03:56:34,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:34" (3/3) ... [2021-02-24 03:56:34,453 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-02-24 03:56:34,460 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:56:34,465 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:56:34,481 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:56:34,506 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:56:34,506 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:56:34,506 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:56:34,506 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:56:34,506 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:56:34,507 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:56:34,507 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:56:34,507 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:56:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2021-02-24 03:56:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-02-24 03:56:34,544 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:34,545 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 03:56:34,546 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:34,553 INFO L82 PathProgramCache]: Analyzing trace with hash -485643019, now seen corresponding path program 1 times [2021-02-24 03:56:34,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:34,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114416122] [2021-02-24 03:56:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:34,639 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:34,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:34,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:34,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:34,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:56:34,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:34,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:35,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:35,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:35,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 03:56:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:35,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:35,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 03:56:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:35,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:35,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:35,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-24 03:56:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:35,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:35,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:35,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-24 03:56:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:35,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:35,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:35,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-24 03:56:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:35,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:35,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:35,121 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 03:56:35,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114416122] [2021-02-24 03:56:35,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:35,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:56:35,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952645066] [2021-02-24 03:56:35,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:56:35,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:35,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:56:35,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:56:35,169 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2021-02-24 03:56:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:36,119 INFO L93 Difference]: Finished difference Result 262 states and 318 transitions. [2021-02-24 03:56:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:56:36,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2021-02-24 03:56:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:36,135 INFO L225 Difference]: With dead ends: 262 [2021-02-24 03:56:36,135 INFO L226 Difference]: Without dead ends: 134 [2021-02-24 03:56:36,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:36,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-24 03:56:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-02-24 03:56:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-02-24 03:56:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2021-02-24 03:56:36,223 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 108 [2021-02-24 03:56:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:36,225 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2021-02-24 03:56:36,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:56:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2021-02-24 03:56:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-24 03:56:36,230 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:36,230 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 03:56:36,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:56:36,231 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:36,232 INFO L82 PathProgramCache]: Analyzing trace with hash 347783644, now seen corresponding path program 1 times [2021-02-24 03:56:36,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:36,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744516114] [2021-02-24 03:56:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:36,236 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:36,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:36,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:36,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:36,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:36,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:36,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 03:56:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:36,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 03:56:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:36,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-24 03:56:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:36,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-24 03:56:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:36,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-24 03:56:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:36,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:36,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:36,511 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 03:56:36,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744516114] [2021-02-24 03:56:36,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:36,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 03:56:36,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776683493] [2021-02-24 03:56:36,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 03:56:36,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:36,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 03:56:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:36,515 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand 5 states. [2021-02-24 03:56:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:37,302 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2021-02-24 03:56:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:56:37,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2021-02-24 03:56:37,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:37,306 INFO L225 Difference]: With dead ends: 150 [2021-02-24 03:56:37,307 INFO L226 Difference]: Without dead ends: 133 [2021-02-24 03:56:37,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-24 03:56:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-02-24 03:56:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-24 03:56:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2021-02-24 03:56:37,341 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 110 [2021-02-24 03:56:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:37,342 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2021-02-24 03:56:37,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 03:56:37,342 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2021-02-24 03:56:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-24 03:56:37,345 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:37,345 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 03:56:37,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:56:37,346 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:37,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1662879100, now seen corresponding path program 1 times [2021-02-24 03:56:37,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:37,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104002008] [2021-02-24 03:56:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:37,350 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 03:56:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 03:56:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,545 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-24 03:56:37,546 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-24 03:56:37,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:56:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-24 03:56:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-24 03:56:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-24 03:56:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:37,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:37,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:37,639 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 03:56:37,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104002008] [2021-02-24 03:56:37,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:37,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 03:56:37,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351851063] [2021-02-24 03:56:37,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 03:56:37,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:37,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 03:56:37,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:37,644 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand 5 states. [2021-02-24 03:56:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:38,458 INFO L93 Difference]: Finished difference Result 271 states and 318 transitions. [2021-02-24 03:56:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:56:38,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2021-02-24 03:56:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:38,472 INFO L225 Difference]: With dead ends: 271 [2021-02-24 03:56:38,472 INFO L226 Difference]: Without dead ends: 174 [2021-02-24 03:56:38,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-24 03:56:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-02-24 03:56:38,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151. [2021-02-24 03:56:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-02-24 03:56:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2021-02-24 03:56:38,533 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 110 [2021-02-24 03:56:38,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:38,534 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2021-02-24 03:56:38,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 03:56:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2021-02-24 03:56:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [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, 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 03:56:38,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:56:38,537 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1400205347, now seen corresponding path program 1 times [2021-02-24 03:56:38,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:38,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827084003] [2021-02-24 03:56:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:38,541 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 03:56:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 03:56:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,644 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-24 03:56:38,645 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-24 03:56:38,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:56:38,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-24 03:56:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-24 03:56:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:38,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:38,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:38,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-02-24 03:56:38,685 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 03:56:38,711 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 03:56:38,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827084003] [2021-02-24 03:56:38,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:38,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 03:56:38,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457379345] [2021-02-24 03:56:38,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 03:56:38,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:38,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 03:56:38,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:38,715 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand 5 states. [2021-02-24 03:56:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:39,479 INFO L93 Difference]: Finished difference Result 282 states and 331 transitions. [2021-02-24 03:56:39,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:56:39,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2021-02-24 03:56:39,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:39,486 INFO L225 Difference]: With dead ends: 282 [2021-02-24 03:56:39,486 INFO L226 Difference]: Without dead ends: 175 [2021-02-24 03:56:39,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-02-24 03:56:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2021-02-24 03:56:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-24 03:56:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 189 transitions. [2021-02-24 03:56:39,536 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 189 transitions. Word has length 113 [2021-02-24 03:56:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:39,536 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 189 transitions. [2021-02-24 03:56:39,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 03:56:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 189 transitions. [2021-02-24 03:56:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-02-24 03:56:39,539 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:39,539 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 03:56:39,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:56:39,539 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:39,540 INFO L82 PathProgramCache]: Analyzing trace with hash -136962435, now seen corresponding path program 1 times [2021-02-24 03:56:39,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:39,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89571111] [2021-02-24 03:56:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:39,559 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 03:56:39,561 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 03:56:39,747 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-02-24 03:56:39,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 03:56:39,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 03:56:39,826 WARN L141 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-02-24 03:56:39,840 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 03:56:39,845 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 03:56:39,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 03:56:39,865 WARN L147 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size 24 [2021-02-24 03:56:39,871 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size [2021-02-24 03:56:39,878 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-02-24 03:56:39,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 03:56:39,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 03:56:39,910 WARN L141 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-02-24 03:56:39,911 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 03:56:39,913 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 03:56:39,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 03:56:39,924 WARN L147 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size 28 [2021-02-24 03:56:39,927 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.1 percent of original size [2021-02-24 03:56:39,930 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.1 percent of original size 49 [2021-02-24 03:56:39,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 03:56:39,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 03:56:39,953 WARN L141 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-02-24 03:56:39,955 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 03:56:39,957 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 03:56:39,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:39,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 03:56:39,966 WARN L147 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size 24 [2021-02-24 03:56:39,970 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size [2021-02-24 03:56:39,973 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-02-24 03:56:39,978 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 03:56:39,982 INFO L168 Benchmark]: Toolchain (without parser) took 7062.98 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 135.7 MB in the beginning and 128.0 MB in the end (delta: 7.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:39,982 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:56:39,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.10 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 122.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:39,984 INFO L168 Benchmark]: Boogie Preprocessor took 58.40 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 120.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:39,984 INFO L168 Benchmark]: RCFGBuilder took 1033.04 ms. Allocated memory is still 159.4 MB. Free memory was 120.1 MB in the beginning and 116.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:39,985 INFO L168 Benchmark]: TraceAbstraction took 5535.06 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 116.1 MB in the beginning and 128.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:39,988 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 159.4 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 414.10 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 122.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.40 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 120.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1033.04 ms. Allocated memory is still 159.4 MB. Free memory was 120.1 MB in the beginning and 116.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5535.06 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 116.1 MB in the beginning and 128.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 25.4 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...