/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_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:34:49,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:34:49,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:34:49,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:34:49,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:34:49,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:34:49,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:34:49,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:34:49,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:34:49,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:34:50,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:34:50,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:34:50,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:34:50,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:34:50,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:34:50,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:34:50,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:34:50,044 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 22:34:50,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:34:50,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:34:50,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:34:50,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:34:50,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:34:50,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:34:50,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:34:50,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:34:50,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:34:50,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:34:50,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:34:50,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:34:50,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:34:50,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:34:50,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:34:50,076 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:34:50,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:34:50,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:34:50,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:34:50,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:34:50,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:34:50,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:34:50,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:34:50,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:34:50,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:34:50,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:34:50,524 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:34:50,526 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:34:50,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2021-02-23 22:34:50,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583e8fbe0/b72f7ec7aa60404e9e32b44d837c7f37/FLAG3aafafafe [2021-02-23 22:34:51,251 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:34:51,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2021-02-23 22:34:51,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583e8fbe0/b72f7ec7aa60404e9e32b44d837c7f37/FLAG3aafafafe [2021-02-23 22:34:51,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583e8fbe0/b72f7ec7aa60404e9e32b44d837c7f37 [2021-02-23 22:34:51,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:34:51,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:34:51,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:51,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:34:51,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:34:51,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:51,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15414e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51, skipping insertion in model container [2021-02-23 22:34:51,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:51,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:34:51,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:34:51,896 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] [2021-02-23 22:34:51,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:51,916 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:34:51,946 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] [2021-02-23 22:34:51,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:51,965 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:34:51,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51 WrapperNode [2021-02-23 22:34:51,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:51,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:34:51,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:34:51,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:34:51,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:51,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:51,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:51,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:52,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:52,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:52,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (1/1) ... [2021-02-23 22:34:52,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:34:52,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:34:52,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:34:52,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:34:52,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (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 22:34:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:34:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:34:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:34:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:34:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 22:34:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-23 22:34:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:34:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:34:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:34:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:34:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:34:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 22:34:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:34:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 22:34:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:34:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:34:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:34:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-23 22:34:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:34:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:34:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:34:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:34:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:34:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:34:52,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:34:52,709 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 22:34:52,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:52 BoogieIcfgContainer [2021-02-23 22:34:52,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:34:52,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:34:52,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:34:52,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:34:52,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:51" (1/3) ... [2021-02-23 22:34:52,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47634fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:52, skipping insertion in model container [2021-02-23 22:34:52,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:51" (2/3) ... [2021-02-23 22:34:52,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47634fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:52, skipping insertion in model container [2021-02-23 22:34:52,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:52" (3/3) ... [2021-02-23 22:34:52,724 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-02-23 22:34:52,732 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:34:52,737 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:34:52,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:34:52,777 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:34:52,778 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:34:52,778 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:34:52,778 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:34:52,778 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:34:52,778 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:34:52,778 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:34:52,778 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:34:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-02-23 22:34:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-23 22:34:52,806 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:52,807 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] [2021-02-23 22:34:52,807 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:52,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash 367581141, now seen corresponding path program 1 times [2021-02-23 22:34:52,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:52,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596747753] [2021-02-23 22:34:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:34:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-23 22:34:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,235 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 22:34:53,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596747753] [2021-02-23 22:34:53,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:53,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:34:53,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201531349] [2021-02-23 22:34:53,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:34:53,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:53,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:34:53,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:34:53,260 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2021-02-23 22:34:53,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:53,643 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2021-02-23 22:34:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:34:53,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2021-02-23 22:34:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:53,655 INFO L225 Difference]: With dead ends: 141 [2021-02-23 22:34:53,656 INFO L226 Difference]: Without dead ends: 73 [2021-02-23 22:34:53,660 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 [2021-02-23 22:34:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-23 22:34:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-23 22:34:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 22:34:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2021-02-23 22:34:53,719 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 43 [2021-02-23 22:34:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:53,720 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2021-02-23 22:34:53,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:34:53,720 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2021-02-23 22:34:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 22:34:53,723 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:53,723 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 22:34:53,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:34:53,724 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:53,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:53,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1276161309, now seen corresponding path program 1 times [2021-02-23 22:34:53,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:53,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961684105] [2021-02-23 22:34:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:34:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:53,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-23 22:34:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,020 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 22:34:54,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961684105] [2021-02-23 22:34:54,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:54,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:34:54,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195862311] [2021-02-23 22:34:54,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:34:54,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:34:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:34:54,025 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 6 states. [2021-02-23 22:34:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:54,390 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2021-02-23 22:34:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:34:54,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-23 22:34:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:54,395 INFO L225 Difference]: With dead ends: 94 [2021-02-23 22:34:54,395 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 22:34:54,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:34:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 22:34:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-02-23 22:34:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-23 22:34:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-02-23 22:34:54,414 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 53 [2021-02-23 22:34:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:54,414 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-02-23 22:34:54,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:34:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-02-23 22:34:54,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 22:34:54,417 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:54,417 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] [2021-02-23 22:34:54,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:34:54,417 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:54,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1003885213, now seen corresponding path program 1 times [2021-02-23 22:34:54,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:54,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832403732] [2021-02-23 22:34:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:34:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 22:34:54,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:54,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-23 22:34:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,639 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 22:34:54,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832403732] [2021-02-23 22:34:54,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:54,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:34:54,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379689028] [2021-02-23 22:34:54,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:34:54,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:54,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:34:54,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:34:54,642 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 6 states. [2021-02-23 22:34:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:55,010 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-02-23 22:34:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:34:55,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2021-02-23 22:34:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:55,013 INFO L225 Difference]: With dead ends: 98 [2021-02-23 22:34:55,013 INFO L226 Difference]: Without dead ends: 82 [2021-02-23 22:34:55,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:34:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-23 22:34:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2021-02-23 22:34:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-23 22:34:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-02-23 22:34:55,029 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 56 [2021-02-23 22:34:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:55,029 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-02-23 22:34:55,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:34:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-02-23 22:34:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 22:34:55,031 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:55,032 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] [2021-02-23 22:34:55,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:34:55,032 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:55,033 INFO L82 PathProgramCache]: Analyzing trace with hash 608938589, now seen corresponding path program 1 times [2021-02-23 22:34:55,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:55,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899864184] [2021-02-23 22:34:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:55,065 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:55,088 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:55,141 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:34:55,142 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:34:55,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:34:55,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:55 BoogieIcfgContainer [2021-02-23 22:34:55,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:34:55,226 INFO L168 Benchmark]: Toolchain (without parser) took 3638.07 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 136.1 MB in the beginning and 172.3 MB in the end (delta: -36.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,227 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:34:55,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.50 ms. Allocated memory is still 161.5 MB. Free memory was 135.0 MB in the beginning and 124.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,228 INFO L168 Benchmark]: Boogie Preprocessor took 50.41 ms. Allocated memory is still 161.5 MB. Free memory was 124.7 MB in the beginning and 123.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,229 INFO L168 Benchmark]: RCFGBuilder took 690.46 ms. Allocated memory is still 161.5 MB. Free memory was 122.9 MB in the beginning and 136.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,230 INFO L168 Benchmark]: TraceAbstraction took 2510.26 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 136.4 MB in the beginning and 172.3 MB in the end (delta: -35.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 359.50 ms. Allocated memory is still 161.5 MB. Free memory was 135.0 MB in the beginning and 124.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.41 ms. Allocated memory is still 161.5 MB. Free memory was 124.7 MB in the beginning and 123.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 690.46 ms. Allocated memory is still 161.5 MB. Free memory was 122.9 MB in the beginning and 136.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2510.26 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 136.4 MB in the beginning and 172.3 MB in the end (delta: -35.9 MB). Peak memory consumption was 13.4 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) VAL [\old(x)=4294967302, \old(y)=4294967301] [L47] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L20] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L23] ieee_double_shape_type ew_u; VAL [\old(x)=4294967302, ew_u={3:0}, x=4294967302] [L24] ew_u.value = (x) VAL [\old(x)=4294967302, ew_u={3:0}, x=4294967302] [L25] EXPR ew_u.parts.msw VAL [\old(x)=4294967302, ew_u={3:0}, ew_u.parts.msw=4293918721, x=4294967302] [L25] (msw) = ew_u.parts.msw VAL [\old(x)=4294967302, ew_u={3:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967302] [L26] EXPR ew_u.parts.lsw VAL [\old(x)=4294967302, ew_u={3:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=4294967302] [L26] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967302, ew_u={3:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967302] [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L43] return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L47] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967301, __fpclassify_double(x)=0, x=4294967302, y=4294967301] [L47] COND TRUE __fpclassify_double(x) == 0 VAL [\old(x)=4294967302, \old(y)=4294967301, __fpclassify_double(x)=0, x=4294967302, y=4294967301] [L48] return y; VAL [\old(x)=4294967302, \old(y)=4294967301, \result=4294967301, x=4294967302, y=4294967301] [L65] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967301, x=4294967302, y=4294967301] [L65] double res = fmin_double(x, y); VAL [fmin_double(x, y)=4294967301, res=4294967301, x=4294967302, y=4294967301] [L67] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967301] [L18] return x != x; VAL [\old(x)=4294967301, \result=0, x=4294967301] [L67] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967301, x=4294967302, y=4294967301] [L67] COND TRUE !isnan_double(res) VAL [isnan_double(res)=0, res=4294967301, x=4294967302, y=4294967301] [L68] reach_error() VAL [res=4294967301, x=4294967302, y=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, 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, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 16395 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...