/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:59,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:59,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:59,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:59,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:59,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:59,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:59,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:59,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:59,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:59,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:59,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:59,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:59,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:59,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:59,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:59,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:59,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:59,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:59,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:59,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:47:59,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:59,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:59,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:59,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:59,292 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:59,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:59,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:59,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:59,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:59,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:59,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:59,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:59,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:59,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:59,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:59,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:59,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:59,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:59,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:59,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:59,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:59,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:59,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:59,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:59,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:59,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:59,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:59,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:59,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:59,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:59,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:59,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:59,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:59,772 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:59,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2021-02-21 15:47:59,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1118f0374/284cb7402a8949d2a62092d84b91123e/FLAG435cee1b3 [2021-02-21 15:48:00,434 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:48:00,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2021-02-21 15:48:00,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1118f0374/284cb7402a8949d2a62092d84b91123e/FLAG435cee1b3 [2021-02-21 15:48:00,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1118f0374/284cb7402a8949d2a62092d84b91123e [2021-02-21 15:48:00,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:48:00,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:48:00,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:48:00,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:48:00,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:48:00,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:00" (1/1) ... [2021-02-21 15:48:00,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395eecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:00, skipping insertion in model container [2021-02-21 15:48:00,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:00" (1/1) ... [2021-02-21 15:48:00,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:48:00,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:48:01,116 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/float_req_bl_1230.c[1411,1424] [2021-02-21 15:48:01,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:48:01,137 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:48:01,172 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/float_req_bl_1230.c[1411,1424] [2021-02-21 15:48:01,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:48:01,191 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:48:01,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01 WrapperNode [2021-02-21 15:48:01,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:48:01,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:48:01,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:48:01,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:48:01,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (1/1) ... [2021-02-21 15:48:01,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (1/1) ... [2021-02-21 15:48:01,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (1/1) ... [2021-02-21 15:48:01,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (1/1) ... [2021-02-21 15:48:01,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (1/1) ... [2021-02-21 15:48:01,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (1/1) ... [2021-02-21 15:48:01,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (1/1) ... [2021-02-21 15:48:01,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:48:01,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:48:01,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:48:01,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:48:01,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:48:01,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:48:01,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:48:01,332 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:48:01,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-02-21 15:48:01,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2021-02-21 15:48:01,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-21 15:48:01,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:48:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:48:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:48:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:48:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:48:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-02-21 15:48:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:48:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:48:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:48:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2021-02-21 15:48:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-21 15:48:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:48:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:48:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:48:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:48:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:48:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:48:01,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:48:01,702 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 15:48:01,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:01 BoogieIcfgContainer [2021-02-21 15:48:01,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:48:01,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:48:01,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:48:01,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:48:01,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:48:00" (1/3) ... [2021-02-21 15:48:01,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047ed19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:01, skipping insertion in model container [2021-02-21 15:48:01,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:01" (2/3) ... [2021-02-21 15:48:01,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047ed19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:01, skipping insertion in model container [2021-02-21 15:48:01,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:01" (3/3) ... [2021-02-21 15:48:01,733 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2021-02-21 15:48:01,745 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:48:01,754 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:48:01,776 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:48:01,806 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:48:01,807 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:48:01,807 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:48:01,807 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:48:01,807 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:48:01,807 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:48:01,807 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:48:01,808 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:48:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-21 15:48:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:48:01,833 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:01,834 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] [2021-02-21 15:48:01,834 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1452657676, now seen corresponding path program 1 times [2021-02-21 15:48:01,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:01,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362149638] [2021-02-21 15:48:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:48:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:48:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 15:48:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:48:02,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362149638] [2021-02-21 15:48:02,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:48:02,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:48:02,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875607540] [2021-02-21 15:48:02,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:48:02,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:02,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:48:02,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:48:02,226 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2021-02-21 15:48:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:02,559 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2021-02-21 15:48:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:48:02,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2021-02-21 15:48:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:02,571 INFO L225 Difference]: With dead ends: 71 [2021-02-21 15:48:02,572 INFO L226 Difference]: Without dead ends: 36 [2021-02-21 15:48:02,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:48:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-21 15:48:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-21 15:48:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-21 15:48:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-02-21 15:48:02,652 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2021-02-21 15:48:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:02,652 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-02-21 15:48:02,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:48:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-02-21 15:48:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 15:48:02,660 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:02,661 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] [2021-02-21 15:48:02,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:48:02,661 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:02,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2013628271, now seen corresponding path program 1 times [2021-02-21 15:48:02,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:02,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731573720] [2021-02-21 15:48:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:48:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:02,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:48:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-21 15:48:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:02,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:02,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:48:02,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731573720] [2021-02-21 15:48:02,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:48:02,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:48:02,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953023769] [2021-02-21 15:48:02,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:48:02,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:02,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:48:02,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:48:02,978 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2021-02-21 15:48:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:03,134 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-02-21 15:48:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:48:03,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-02-21 15:48:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:03,138 INFO L225 Difference]: With dead ends: 51 [2021-02-21 15:48:03,139 INFO L226 Difference]: Without dead ends: 40 [2021-02-21 15:48:03,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:48:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-21 15:48:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-21 15:48:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-21 15:48:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-02-21 15:48:03,153 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2021-02-21 15:48:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:03,153 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-02-21 15:48:03,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:48:03,154 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-02-21 15:48:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 15:48:03,155 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:03,155 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] [2021-02-21 15:48:03,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:48:03,156 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:03,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2104341517, now seen corresponding path program 1 times [2021-02-21 15:48:03,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:03,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462595531] [2021-02-21 15:48:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:03,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:03,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:03,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:03,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:03,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:48:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:03,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:03,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:03,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:48:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:03,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:03,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:03,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-21 15:48:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:03,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:03,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:48:03,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462595531] [2021-02-21 15:48:03,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:48:03,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:48:03,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701569354] [2021-02-21 15:48:03,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:48:03,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:03,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:48:03,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:48:03,410 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2021-02-21 15:48:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:03,602 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-02-21 15:48:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:48:03,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2021-02-21 15:48:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:03,607 INFO L225 Difference]: With dead ends: 55 [2021-02-21 15:48:03,608 INFO L226 Difference]: Without dead ends: 44 [2021-02-21 15:48:03,609 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 [2021-02-21 15:48:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-21 15:48:03,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-02-21 15:48:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-21 15:48:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-02-21 15:48:03,620 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2021-02-21 15:48:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:03,621 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-02-21 15:48:03,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:48:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-02-21 15:48:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 15:48:03,622 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:03,622 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] [2021-02-21 15:48:03,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 15:48:03,623 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash -596789708, now seen corresponding path program 1 times [2021-02-21 15:48:03,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:03,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152243933] [2021-02-21 15:48:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:48:03,651 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:48:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:48:03,671 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:48:03,700 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:48:03,700 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:48:03,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 15:48:03,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:48:03 BoogieIcfgContainer [2021-02-21 15:48:03,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:48:03,739 INFO L168 Benchmark]: Toolchain (without parser) took 2941.06 ms. Allocated memory is still 167.8 MB. Free memory was 142.9 MB in the beginning and 137.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:03,740 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 167.8 MB. Free memory is still 140.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:48:03,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.72 ms. Allocated memory is still 167.8 MB. Free memory was 141.9 MB in the beginning and 131.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:03,742 INFO L168 Benchmark]: Boogie Preprocessor took 44.87 ms. Allocated memory is still 167.8 MB. Free memory was 131.4 MB in the beginning and 130.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:03,743 INFO L168 Benchmark]: RCFGBuilder took 470.58 ms. Allocated memory is still 167.8 MB. Free memory was 130.0 MB in the beginning and 112.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:03,743 INFO L168 Benchmark]: TraceAbstraction took 2023.38 ms. Allocated memory is still 167.8 MB. Free memory was 111.8 MB in the beginning and 137.1 MB in the end (delta: -25.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:48:03,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 167.8 MB. Free memory is still 140.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 374.72 ms. Allocated memory is still 167.8 MB. Free memory was 141.9 MB in the beginning and 131.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.87 ms. Allocated memory is still 167.8 MB. Free memory was 131.4 MB in the beginning and 130.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 470.58 ms. Allocated memory is still 167.8 MB. Free memory was 130.0 MB in the beginning and 112.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2023.38 ms. Allocated memory is still 167.8 MB. Free memory was 111.8 MB in the beginning and 137.1 MB in the end (delta: -25.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 56. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L58] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095043, \old(y)=2139095046] [L37] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L14] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L37] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=2139095046, __fpclassify_float(x)=0, x=2139095043, y=2139095046] [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; VAL [\old(x)=2139095043, \old(y)=2139095046, \result=2139095046, x=2139095043, y=2139095046] [L58] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095046, x=2139095043, y=2139095046] [L58] float res = fmin_float(x, y); [L60] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095046] [L46] return x != x; VAL [\old(x)=2139095046, \result=0, x=2139095046] [L60] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095046, x=2139095043, y=2139095046] [L60] COND TRUE !isnan_float(res) [L61] reach_error() VAL [res=2139095046, x=2139095043, y=2139095046] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 30 SDslu, 213 SDs, 0 SdLazy, 162 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 6902 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...