/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/float-newlib/double_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:15,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:15,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:15,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:15,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:15,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:15,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:15,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:15,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:15,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:15,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:15,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:15,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:15,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:15,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:15,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:15,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:15,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:15,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:15,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:15,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:15,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:15,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:15,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:15,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:15,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:15,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:15,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:15,706 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 20:10:15,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:15,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:15,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:15,726 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:15,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:15,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:15,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:15,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:15,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:15,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:15,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:15,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:15,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:15,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:15,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:15,730 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:15,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:15,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:15,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:15,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:15,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:15,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:15,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:16,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:16,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:16,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:16,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:16,209 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:16,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2021-02-21 20:10:16,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9142195a2/c591557350e24cbeb70813a6bb09eae3/FLAG94ad256f7 [2021-02-21 20:10:16,926 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:16,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2021-02-21 20:10:16,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9142195a2/c591557350e24cbeb70813a6bb09eae3/FLAG94ad256f7 [2021-02-21 20:10:17,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9142195a2/c591557350e24cbeb70813a6bb09eae3 [2021-02-21 20:10:17,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:17,314 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:17,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:17,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:17,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:17,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534ebf54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17, skipping insertion in model container [2021-02-21 20:10:17,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:17,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:17,534 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c[1667,1680] [2021-02-21 20:10:17,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:17,547 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:17,574 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c[1667,1680] [2021-02-21 20:10:17,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:17,593 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:17,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17 WrapperNode [2021-02-21 20:10:17,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:17,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:17,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:17,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:17,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:17,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:17,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:17,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:17,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (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 20:10:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 20:10:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-21 20:10:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-21 20:10:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 20:10:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 20:10:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-21 20:10:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-21 20:10:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:18,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:18,376 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 20:10:18,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:18 BoogieIcfgContainer [2021-02-21 20:10:18,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:18,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:18,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:18,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:18,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:17" (1/3) ... [2021-02-21 20:10:18,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2a4b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:18, skipping insertion in model container [2021-02-21 20:10:18,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (2/3) ... [2021-02-21 20:10:18,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2a4b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:18, skipping insertion in model container [2021-02-21 20:10:18,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:18" (3/3) ... [2021-02-21 20:10:18,387 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-02-21 20:10:18,395 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:18,401 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:18,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:18,447 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:18,447 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:18,447 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:18,448 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:18,448 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:18,448 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:18,448 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:18,449 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-02-21 20:10:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-21 20:10:18,477 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:18,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:18,479 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash 367581141, now seen corresponding path program 1 times [2021-02-21 20:10:18,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:18,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165299890] [2021-02-21 20:10:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:18,573 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:10:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-21 20:10:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:18,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165299890] [2021-02-21 20:10:18,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:18,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:18,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376728412] [2021-02-21 20:10:18,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:18,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:18,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:18,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:18,961 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2021-02-21 20:10:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:19,380 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2021-02-21 20:10:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:19,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2021-02-21 20:10:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:19,409 INFO L225 Difference]: With dead ends: 141 [2021-02-21 20:10:19,409 INFO L226 Difference]: Without dead ends: 73 [2021-02-21 20:10:19,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:10:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-21 20:10:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-21 20:10:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-21 20:10:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2021-02-21 20:10:19,480 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 43 [2021-02-21 20:10:19,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:19,480 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2021-02-21 20:10:19,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2021-02-21 20:10:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 20:10:19,484 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:19,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:19,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:19,485 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:19,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1276161309, now seen corresponding path program 1 times [2021-02-21 20:10:19,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:19,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324659370] [2021-02-21 20:10:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:19,494 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:19,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:19,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:19,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:19,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:19,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:19,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:19,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:10:19,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:10:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:19,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:19,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:10:19,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 20:10:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:19,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:19,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:19,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324659370] [2021-02-21 20:10:19,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:19,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:10:19,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564049764] [2021-02-21 20:10:19,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:10:19,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:19,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:10:19,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:10:19,710 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 6 states. [2021-02-21 20:10:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:20,017 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2021-02-21 20:10:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:10:20,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-21 20:10:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:20,022 INFO L225 Difference]: With dead ends: 94 [2021-02-21 20:10:20,022 INFO L226 Difference]: Without dead ends: 78 [2021-02-21 20:10:20,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:10:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-21 20:10:20,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-02-21 20:10:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-21 20:10:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-02-21 20:10:20,041 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 53 [2021-02-21 20:10:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:20,041 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-02-21 20:10:20,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:10:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-02-21 20:10:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:10:20,044 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:20,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:20,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:20,044 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:20,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1003885213, now seen corresponding path program 1 times [2021-02-21 20:10:20,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:20,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831316689] [2021-02-21 20:10:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:20,048 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:20,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:20,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:20,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:20,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:20,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:20,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:10:20,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:20,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:10:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:20,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:20,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:10:20,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-21 20:10:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:20,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:20,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:20,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831316689] [2021-02-21 20:10:20,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:20,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:10:20,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343439468] [2021-02-21 20:10:20,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:10:20,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:20,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:10:20,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:10:20,244 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 6 states. [2021-02-21 20:10:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:20,490 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-02-21 20:10:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:10:20,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2021-02-21 20:10:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:20,492 INFO L225 Difference]: With dead ends: 98 [2021-02-21 20:10:20,492 INFO L226 Difference]: Without dead ends: 82 [2021-02-21 20:10:20,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:10:20,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-21 20:10:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2021-02-21 20:10:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-21 20:10:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-02-21 20:10:20,507 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 56 [2021-02-21 20:10:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:20,508 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-02-21 20:10:20,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:10:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-02-21 20:10:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:10:20,510 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:20,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:20,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:10:20,510 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:20,511 INFO L82 PathProgramCache]: Analyzing trace with hash 608938589, now seen corresponding path program 1 times [2021-02-21 20:10:20,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:20,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194950779] [2021-02-21 20:10:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:20,514 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:20,543 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:20,579 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:20,625 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:20,626 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:20,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:10:20,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:20 BoogieIcfgContainer [2021-02-21 20:10:20,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:20,647 INFO L168 Benchmark]: Toolchain (without parser) took 3342.78 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 118.6 MB in the beginning and 93.2 MB in the end (delta: 25.4 MB). Peak memory consumption was 58.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,648 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:20,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.78 ms. Allocated memory is still 162.5 MB. Free memory was 117.6 MB in the beginning and 139.8 MB in the end (delta: -22.2 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,649 INFO L168 Benchmark]: Boogie Preprocessor took 102.26 ms. Allocated memory is still 162.5 MB. Free memory was 139.8 MB in the beginning and 145.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,650 INFO L168 Benchmark]: RCFGBuilder took 680.40 ms. Allocated memory is still 162.5 MB. Free memory was 145.8 MB in the beginning and 124.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,651 INFO L168 Benchmark]: TraceAbstraction took 2265.12 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 123.8 MB in the beginning and 93.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 63.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,654 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 162.5 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.78 ms. Allocated memory is still 162.5 MB. Free memory was 117.6 MB in the beginning and 139.8 MB in the end (delta: -22.2 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 102.26 ms. Allocated memory is still 162.5 MB. Free memory was 139.8 MB in the beginning and 145.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 680.40 ms. Allocated memory is still 162.5 MB. Free memory was 145.8 MB in the beginning and 124.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2265.12 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 123.8 MB in the beginning and 93.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 63.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 64. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L65] CALL, EXPR fmin_double(x, y) [L47] CALL, EXPR __fpclassify_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] RET, EXPR __fpclassify_double(x) [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] RET, EXPR fmin_double(x, y) [L65] double res = fmin_double(x, y); [L67] CALL, EXPR isnan_double(res) [L18] return x != x; [L67] RET, EXPR isnan_double(res) [L67] COND TRUE !isnan_double(res) [L68] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 65 SDslu, 414 SDs, 0 SdLazy, 325 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 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...