/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:34:54,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:34:54,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:34:54,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:34:54,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:34:54,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:34:54,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:34:54,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:34:54,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:34:54,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:34:54,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:34:54,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:34:54,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:34:54,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:34:54,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:34:54,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:34:54,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:34:54,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:34:54,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:34:54,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:34:54,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:34:54,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:34:54,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:34:54,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:34:54,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:34:54,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:34:54,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:34:54,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:34:54,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:34:54,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:34:54,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:34:54,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:34:54,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:34:54,459 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:34:54,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:34:54,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:34:54,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:34:54,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:34:54,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:34:54,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:34:54,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:34:54,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:34:54,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:34:54,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:34:54,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:34:54,832 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:34:54,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2021-02-23 22:34:54,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ecf525d/4f58ed6aaa1041b098acfd43bc1e6a80/FLAG4bf820a4e [2021-02-23 22:34:55,494 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:34:55,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2021-02-23 22:34:55,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ecf525d/4f58ed6aaa1041b098acfd43bc1e6a80/FLAG4bf820a4e [2021-02-23 22:34:55,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ecf525d/4f58ed6aaa1041b098acfd43bc1e6a80 [2021-02-23 22:34:55,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:34:55,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:34:55,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:55,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:34:55,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:34:55,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:55" (1/1) ... [2021-02-23 22:34:55,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b0ce6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:55, skipping insertion in model container [2021-02-23 22:34:55,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:55" (1/1) ... [2021-02-23 22:34:55,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:34:55,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:34:56,078 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_1232a.c[1957,1970] [2021-02-23 22:34:56,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:56,091 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:34:56,120 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_1232a.c[1957,1970] [2021-02-23 22:34:56,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:56,143 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:34:56,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56 WrapperNode [2021-02-23 22:34:56,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:56,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:34:56,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:34:56,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:34:56,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (1/1) ... [2021-02-23 22:34:56,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (1/1) ... [2021-02-23 22:34:56,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (1/1) ... [2021-02-23 22:34:56,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (1/1) ... [2021-02-23 22:34:56,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (1/1) ... [2021-02-23 22:34:56,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (1/1) ... [2021-02-23 22:34:56,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (1/1) ... [2021-02-23 22:34:56,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:34:56,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:34:56,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:34:56,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:34:56,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (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 [2021-02-23 22:34:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:34:56,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:34:56,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:34:56,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:34:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 22:34:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-23 22:34:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-23 22:34:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:34:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:34:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:34:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:34:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:34:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 22:34:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:34:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 22:34:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:34:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:34:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:34:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-23 22:34:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-23 22:34:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:34:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:34:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:34:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:34:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:34:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:34:56,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:34:56,869 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 22:34:56,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:56 BoogieIcfgContainer [2021-02-23 22:34:56,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:34:56,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:34:56,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:34:56,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:34:56,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:55" (1/3) ... [2021-02-23 22:34:56,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda8236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:56, skipping insertion in model container [2021-02-23 22:34:56,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:56" (2/3) ... [2021-02-23 22:34:56,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda8236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:56, skipping insertion in model container [2021-02-23 22:34:56,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:56" (3/3) ... [2021-02-23 22:34:56,880 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2021-02-23 22:34:56,887 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:34:56,892 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:34:56,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:34:56,937 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:34:56,937 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:34:56,937 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:34:56,937 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:34:56,937 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:34:56,938 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:34:56,938 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:34:56,938 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:34:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2021-02-23 22:34:56,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 22:34:56,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:56,969 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] [2021-02-23 22:34:56,969 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:56,975 INFO L82 PathProgramCache]: Analyzing trace with hash -504440581, now seen corresponding path program 1 times [2021-02-23 22:34:56,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:56,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583019569] [2021-02-23 22:34:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:57,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:57,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:57,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:57,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:57,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:57,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:57,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:34:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:57,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:57,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:57,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:57,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:57,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:57,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:57,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:57,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:57,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:34:57,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583019569] [2021-02-23 22:34:57,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:57,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:34:57,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910405184] [2021-02-23 22:34:57,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:34:57,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:57,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:34:57,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:34:57,446 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2021-02-23 22:34:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:57,875 INFO L93 Difference]: Finished difference Result 169 states and 197 transitions. [2021-02-23 22:34:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:34:57,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-02-23 22:34:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:57,887 INFO L225 Difference]: With dead ends: 169 [2021-02-23 22:34:57,887 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 22:34:57,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 22:34:57,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 22:34:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-23 22:34:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 22:34:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-02-23 22:34:57,964 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 40 [2021-02-23 22:34:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:57,965 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-02-23 22:34:57,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:34:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-02-23 22:34:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-23 22:34:57,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:57,969 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] [2021-02-23 22:34:57,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:34:57,969 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:57,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:57,970 INFO L82 PathProgramCache]: Analyzing trace with hash -554767181, now seen corresponding path program 1 times [2021-02-23 22:34:57,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:57,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299668816] [2021-02-23 22:34:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:58,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:58,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:34:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:58,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:58,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:58,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:34:58,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299668816] [2021-02-23 22:34:58,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:58,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:34:58,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295730005] [2021-02-23 22:34:58,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:34:58,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:58,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:34:58,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:34:58,225 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 6 states. [2021-02-23 22:34:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:58,454 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2021-02-23 22:34:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:34:58,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2021-02-23 22:34:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:58,459 INFO L225 Difference]: With dead ends: 120 [2021-02-23 22:34:58,459 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 22:34:58,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:34:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 22:34:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-02-23 22:34:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-23 22:34:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-02-23 22:34:58,479 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 50 [2021-02-23 22:34:58,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:58,479 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-02-23 22:34:58,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:34:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-02-23 22:34:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 22:34:58,482 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:58,482 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] [2021-02-23 22:34:58,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:34:58,483 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:58,484 INFO L82 PathProgramCache]: Analyzing trace with hash -532154925, now seen corresponding path program 1 times [2021-02-23 22:34:58,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:58,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498420976] [2021-02-23 22:34:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:58,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:58,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:34:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:58,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 22:34:58,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:58,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:58,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:58,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:34:58,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498420976] [2021-02-23 22:34:58,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:58,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:34:58,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403262821] [2021-02-23 22:34:58,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:34:58,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:58,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:34:58,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:34:58,631 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 6 states. [2021-02-23 22:34:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:58,863 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2021-02-23 22:34:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:34:58,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-23 22:34:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:58,866 INFO L225 Difference]: With dead ends: 124 [2021-02-23 22:34:58,866 INFO L226 Difference]: Without dead ends: 95 [2021-02-23 22:34:58,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:34:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-23 22:34:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2021-02-23 22:34:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-23 22:34:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-02-23 22:34:58,882 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 53 [2021-02-23 22:34:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:58,882 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-02-23 22:34:58,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:34:58,883 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-02-23 22:34:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 22:34:58,885 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:58,885 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] [2021-02-23 22:34:58,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:34:58,885 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:58,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:58,886 INFO L82 PathProgramCache]: Analyzing trace with hash 180319763, now seen corresponding path program 1 times [2021-02-23 22:34:58,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:58,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230540987] [2021-02-23 22:34:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:58,934 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:58,979 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:59,022 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:34:59,022 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:34:59,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:34:59,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:59 BoogieIcfgContainer [2021-02-23 22:34:59,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:34:59,104 INFO L168 Benchmark]: Toolchain (without parser) took 3257.05 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 126.9 MB in the beginning and 122.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 37.3 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:59,106 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:34:59,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:59,108 INFO L168 Benchmark]: Boogie Preprocessor took 45.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:59,109 INFO L168 Benchmark]: RCFGBuilder took 680.28 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 125.4 MB in the end (delta: -11.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:59,110 INFO L168 Benchmark]: TraceAbstraction took 2229.27 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 124.8 MB in the beginning and 122.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:59,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 680.28 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 125.4 MB in the end (delta: -11.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2229.27 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 124.8 MB in the beginning and 122.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: 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 81, overapproximation of someUnaryDOUBLEoperation at line 77. Possible FailurePath: [L76] double x = 0.0; VAL [x=0] [L77] double y = -0.0; VAL [x=0] [L78] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=4294967301] [L48] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L21] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L24] ieee_double_shape_type ew_u; VAL [\old(x)=0, ew_u={3:0}, x=0] [L25] ew_u.value = (x) VAL [\old(x)=0, ew_u={3:0}, x=0] [L26] EXPR ew_u.parts.msw VAL [\old(x)=0, ew_u={3:0}, ew_u.parts.msw=4293918721, x=0] [L26] (msw) = ew_u.parts.msw VAL [\old(x)=0, ew_u={3:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=0] [L27] EXPR ew_u.parts.lsw VAL [\old(x)=0, ew_u={3:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=0] [L27] (lsw) = ew_u.parts.lsw VAL [\old(x)=0, ew_u={3:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=0] [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L44] return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=4293918721, x=0] [L48] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4294967301, __fpclassify_double(x)=0, x=0, y=4294967301] [L48] COND TRUE __fpclassify_double(x) == 0 VAL [\old(x)=0, \old(y)=4294967301, __fpclassify_double(x)=0, x=0, y=4294967301] [L49] return y; VAL [\old(x)=0, \old(y)=4294967301, \result=4294967301, x=0, y=4294967301] [L78] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967301, x=0, y=4294967301] [L78] double res = fmin_double(x, y); VAL [fmin_double(x, y)=4294967301, res=4294967301, x=0, y=4294967301] [L81] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967301, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4294967301] [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) VAL [res=4294967301, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4294967301] [L82] reach_error() VAL [res=4294967301, x=0, y=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 282 SDtfs, 59 SDslu, 510 SDs, 0 SdLazy, 380 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 14994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...