/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:11:05,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:11:05,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:11:05,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:11:05,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:11:05,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:11:05,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:11:05,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:11:05,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:11:05,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:11:05,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:11:05,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:11:05,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:11:05,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:11:05,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:11:05,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:11:05,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:11:05,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:11:05,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:11:05,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:11:05,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:11:05,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:11:05,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:11:05,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:11:05,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:11:05,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:11:05,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:11:05,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:11:05,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:11:05,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:11:05,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:11:05,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:11:05,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:11:05,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:11:05,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:11:05,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:11:05,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:11:05,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:11:05,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:11:05,621 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:11:05,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:11:05,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:11:05,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:11:05,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:11:05,622 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:11:05,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:11:05,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:11:05,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:11:05,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:11:05,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:11:05,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:11:05,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:11:06,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:11:06,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:11:06,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:11:06,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:11:06,062 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:11:06,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2021-02-21 20:11:06,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724187223/201f7a712d414940aeab30c538fe657e/FLAGe6bdee2c6 [2021-02-21 20:11:06,814 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:11:06,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2021-02-21 20:11:06,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724187223/201f7a712d414940aeab30c538fe657e/FLAGe6bdee2c6 [2021-02-21 20:11:07,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724187223/201f7a712d414940aeab30c538fe657e [2021-02-21 20:11:07,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:11:07,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:11:07,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:11:07,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:11:07,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:11:07,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d7b3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07, skipping insertion in model container [2021-02-21 20:11:07,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:11:07,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:11:07,466 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_4-3a.c.cil.c[425,438] [2021-02-21 20:11:07,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:11:07,542 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:11:07,557 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_4-3a.c.cil.c[425,438] [2021-02-21 20:11:07,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:11:07,604 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:11:07,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07 WrapperNode [2021-02-21 20:11:07,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:11:07,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:11:07,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:11:07,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:11:07,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (1/1) ... [2021-02-21 20:11:07,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:11:07,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:11:07,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:11:07,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:11:07,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (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 [2021-02-21 20:11:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:11:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:11:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:11:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 20:11:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-02-21 20:11:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-02-21 20:11:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2021-02-21 20:11:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:11:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:11:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:11:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:11:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:11:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 20:11:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 20:11:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 20:11:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-02-21 20:11:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-02-21 20:11:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2021-02-21 20:11:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:11:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:11:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:11:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:11:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:11:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:11:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:11:08,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:11:08,491 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 20:11:08,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:11:08 BoogieIcfgContainer [2021-02-21 20:11:08,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:11:08,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:11:08,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:11:08,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:11:08,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:11:07" (1/3) ... [2021-02-21 20:11:08,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e962840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:11:08, skipping insertion in model container [2021-02-21 20:11:08,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:07" (2/3) ... [2021-02-21 20:11:08,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e962840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:11:08, skipping insertion in model container [2021-02-21 20:11:08,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:11:08" (3/3) ... [2021-02-21 20:11:08,502 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-02-21 20:11:08,508 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:11:08,512 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:11:08,528 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:11:08,549 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:11:08,550 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:11:08,550 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:11:08,550 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:11:08,550 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:11:08,550 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:11:08,550 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:11:08,551 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:11:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2021-02-21 20:11:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-21 20:11:08,582 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:08,583 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-02-21 20:11:08,584 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:08,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash -535224117, now seen corresponding path program 1 times [2021-02-21 20:11:08,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:08,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35718015] [2021-02-21 20:11:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:08,677 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:09,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:09,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:09,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:09,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:09,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:09,072 WARN L141 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size [2021-02-21 20:11:09,074 WARN L147 QuantifierPusher]: treesize reduction 10, result has 79.2 percent of original size 38 [2021-02-21 20:11:09,093 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-21 20:11:09,095 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-21 20:11:09,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:09,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:09,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 20:11:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:09,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-21 20:11:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:09,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:09,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-21 20:11:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:09,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:09,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:09,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:09,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-21 20:11:09,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35718015] [2021-02-21 20:11:09,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:09,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:11:09,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314777489] [2021-02-21 20:11:09,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:11:09,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:09,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:11:09,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:11:09,286 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2021-02-21 20:11:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:10,490 INFO L93 Difference]: Finished difference Result 268 states and 333 transitions. [2021-02-21 20:11:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:11:10,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2021-02-21 20:11:10,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:10,505 INFO L225 Difference]: With dead ends: 268 [2021-02-21 20:11:10,506 INFO L226 Difference]: Without dead ends: 158 [2021-02-21 20:11:10,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:11:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-21 20:11:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2021-02-21 20:11:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-02-21 20:11:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2021-02-21 20:11:10,589 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 89 [2021-02-21 20:11:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:10,590 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2021-02-21 20:11:10,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:11:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2021-02-21 20:11:10,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-21 20:11:10,595 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:10,595 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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] [2021-02-21 20:11:10,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:11:10,596 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:10,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2082711503, now seen corresponding path program 1 times [2021-02-21 20:11:10,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:10,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407868317] [2021-02-21 20:11:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:10,601 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:10,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:10,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:10,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:10,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:10,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:10,753 WARN L141 QuantifierPusher]: treesize reduction 11, result has 84.9 percent of original size [2021-02-21 20:11:10,755 WARN L147 QuantifierPusher]: treesize reduction 11, result has 84.9 percent of original size 62 [2021-02-21 20:11:10,796 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-02-21 20:11:10,798 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size 52 [2021-02-21 20:11:10,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:10,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:10,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:10,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 20:11:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:10,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-21 20:11:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:10,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:10,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:10,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-21 20:11:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:10,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:10,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-21 20:11:10,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407868317] [2021-02-21 20:11:10,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:10,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:11:10,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588201401] [2021-02-21 20:11:10,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:11:10,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:10,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:11:10,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:11:10,918 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand 10 states. [2021-02-21 20:11:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:12,221 INFO L93 Difference]: Finished difference Result 288 states and 332 transitions. [2021-02-21 20:11:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:11:12,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2021-02-21 20:11:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:12,230 INFO L225 Difference]: With dead ends: 288 [2021-02-21 20:11:12,231 INFO L226 Difference]: Without dead ends: 229 [2021-02-21 20:11:12,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-02-21 20:11:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-02-21 20:11:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 194. [2021-02-21 20:11:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-02-21 20:11:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 224 transitions. [2021-02-21 20:11:12,308 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 224 transitions. Word has length 93 [2021-02-21 20:11:12,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:12,311 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 224 transitions. [2021-02-21 20:11:12,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:11:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 224 transitions. [2021-02-21 20:11:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-21 20:11:12,320 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:12,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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] [2021-02-21 20:11:12,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:11:12,321 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:12,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1979221695, now seen corresponding path program 1 times [2021-02-21 20:11:12,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:12,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770850517] [2021-02-21 20:11:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:12,329 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:12,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:12,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:12,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:12,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:12,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:12,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:12,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:12,457 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-21 20:11:12,459 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-21 20:11:12,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:12,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:12,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 20:11:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:12,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:12,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-21 20:11:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:12,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:12,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:12,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-21 20:11:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:12,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:12,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-21 20:11:12,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770850517] [2021-02-21 20:11:12,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:12,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 20:11:12,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280489195] [2021-02-21 20:11:12,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 20:11:12,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:12,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 20:11:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:11:12,621 INFO L87 Difference]: Start difference. First operand 194 states and 224 transitions. Second operand 11 states. [2021-02-21 20:11:14,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:14,006 INFO L93 Difference]: Finished difference Result 291 states and 333 transitions. [2021-02-21 20:11:14,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 20:11:14,007 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 96 [2021-02-21 20:11:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:14,009 INFO L225 Difference]: With dead ends: 291 [2021-02-21 20:11:14,010 INFO L226 Difference]: Without dead ends: 207 [2021-02-21 20:11:14,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-02-21 20:11:14,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-02-21 20:11:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 171. [2021-02-21 20:11:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-02-21 20:11:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 194 transitions. [2021-02-21 20:11:14,046 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 194 transitions. Word has length 96 [2021-02-21 20:11:14,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:14,047 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 194 transitions. [2021-02-21 20:11:14,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 20:11:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 194 transitions. [2021-02-21 20:11:14,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-02-21 20:11:14,048 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:14,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-02-21 20:11:14,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:11:14,049 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1035810605, now seen corresponding path program 2 times [2021-02-21 20:11:14,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:14,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325040201] [2021-02-21 20:11:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:14,053 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:14,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:14,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:14,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:14,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:11:14,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:11:14,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:11:14,267 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-02-21 20:11:14,271 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size 40 [2021-02-21 20:11:14,317 WARN L141 QuantifierPusher]: treesize reduction 16, result has 79.2 percent of original size [2021-02-21 20:11:14,324 WARN L147 QuantifierPusher]: treesize reduction 16, result has 79.2 percent of original size 61 [2021-02-21 20:11:14,378 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-02-21 20:11:14,379 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size 31 [2021-02-21 20:11:14,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:14,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:11:14,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:11:14,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:14,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:14,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 20:11:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:14,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:14,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-21 20:11:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:14,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:14,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:14,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:14,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-21 20:11:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:14,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:14,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:14,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:14,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-02-21 20:11:14,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325040201] [2021-02-21 20:11:14,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:14,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:11:14,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676037506] [2021-02-21 20:11:14,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:11:14,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:14,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:11:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:11:14,597 INFO L87 Difference]: Start difference. First operand 171 states and 194 transitions. Second operand 16 states. [2021-02-21 20:11:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:17,395 INFO L93 Difference]: Finished difference Result 314 states and 371 transitions. [2021-02-21 20:11:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 20:11:17,396 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2021-02-21 20:11:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:17,399 INFO L225 Difference]: With dead ends: 314 [2021-02-21 20:11:17,399 INFO L226 Difference]: Without dead ends: 255 [2021-02-21 20:11:17,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2021-02-21 20:11:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-02-21 20:11:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 225. [2021-02-21 20:11:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2021-02-21 20:11:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 261 transitions. [2021-02-21 20:11:17,445 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 261 transitions. Word has length 97 [2021-02-21 20:11:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:17,445 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 261 transitions. [2021-02-21 20:11:17,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:11:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 261 transitions. [2021-02-21 20:11:17,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-21 20:11:17,447 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:17,447 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-02-21 20:11:17,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:11:17,448 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:17,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:17,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1400683195, now seen corresponding path program 1 times [2021-02-21 20:11:17,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:17,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665787896] [2021-02-21 20:11:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:17,451 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:11:17,505 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:11:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:11:17,551 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:11:17,614 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:11:17,614 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:11:17,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:11:17,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:11:17 BoogieIcfgContainer [2021-02-21 20:11:17,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:11:17,650 INFO L168 Benchmark]: Toolchain (without parser) took 10458.07 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 126.5 MB in the beginning and 238.6 MB in the end (delta: -112.1 MB). Peak memory consumption was 147.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:17,651 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:11:17,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.11 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 113.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:17,657 INFO L168 Benchmark]: Boogie Preprocessor took 97.44 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 111.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:17,660 INFO L168 Benchmark]: RCFGBuilder took 787.25 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 110.4 MB in the end (delta: 904.7 kB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:17,661 INFO L168 Benchmark]: TraceAbstraction took 9154.44 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 109.9 MB in the beginning and 238.6 MB in the end (delta: -128.7 MB). Peak memory consumption was 130.3 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:17,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.11 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 113.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.44 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 111.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 787.25 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 110.4 MB in the end (delta: 904.7 kB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9154.44 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 109.9 MB in the beginning and 238.6 MB in the end (delta: -128.7 MB). Peak memory consumption was 130.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 105, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L233] CALL, EXPR base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] RET, EXPR base2flt(0, 0) [L233] zero = base2flt(0, 0) [L234] CALL, EXPR base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] RET, EXPR base2flt(ma, ea) [L234] a = base2flt(ma, ea) [L235] CALL, EXPR base2flt(mb, eb) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] RET, EXPR base2flt(mb, eb) [L235] b = base2flt(mb, eb) [L236] CALL addflt(a, b) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L106] CALL __VERIFIER_assert(ea >= eb) [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 181 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 610 SDtfs, 883 SDslu, 816 SDs, 0 SdLazy, 5201 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 113 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...