/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/double_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:24,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:24,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:24,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:24,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:24,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:24,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:24,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:24,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:24,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:24,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:24,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:24,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:24,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:24,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:24,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:24,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:24,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:24,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:24,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:24,742 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 15:47:24,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:24,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:24,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:24,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:24,799 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:24,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:24,799 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:24,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:24,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:24,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:24,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:24,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:24,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:24,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:24,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:24,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:24,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:24,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:24,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:24,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:24,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:24,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:24,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:24,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:24,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:24,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:24,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:24,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:24,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:25,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:25,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:25,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:25,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:25,275 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:25,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2021-02-21 15:47:25,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d02d9900/e49db70a879c41f281e58c63db8c1867/FLAG161ed9612 [2021-02-21 15:47:26,149 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:26,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2021-02-21 15:47:26,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d02d9900/e49db70a879c41f281e58c63db8c1867/FLAG161ed9612 [2021-02-21 15:47:26,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d02d9900/e49db70a879c41f281e58c63db8c1867 [2021-02-21 15:47:26,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:26,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:26,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:26,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:26,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:26,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb686c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26, skipping insertion in model container [2021-02-21 15:47:26,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:26,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:26,733 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_1232b.c[1958,1971] [2021-02-21 15:47:26,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:26,747 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:26,780 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_1232b.c[1958,1971] [2021-02-21 15:47:26,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:26,806 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:26,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26 WrapperNode [2021-02-21 15:47:26,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:26,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:26,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:26,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:26,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (1/1) ... [2021-02-21 15:47:26,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:26,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:26,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:26,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:26,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (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 15:47:26,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:26,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:26,987 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 15:47:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-21 15:47:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-21 15:47:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 15:47:26,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 15:47:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 15:47:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-21 15:47:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-21 15:47:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 15:47:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:27,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:27,650 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 15:47:27,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:27 BoogieIcfgContainer [2021-02-21 15:47:27,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:27,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:27,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:27,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:27,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:26" (1/3) ... [2021-02-21 15:47:27,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ebde22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:27, skipping insertion in model container [2021-02-21 15:47:27,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:26" (2/3) ... [2021-02-21 15:47:27,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ebde22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:27, skipping insertion in model container [2021-02-21 15:47:27,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:27" (3/3) ... [2021-02-21 15:47:27,662 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-02-21 15:47:27,670 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:27,675 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:27,696 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:27,729 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:27,729 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:27,730 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:27,730 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:27,730 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:27,730 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:27,730 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:27,731 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-21 15:47:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 15:47:27,758 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:27,759 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] [2021-02-21 15:47:27,760 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:27,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:27,767 INFO L82 PathProgramCache]: Analyzing trace with hash -272120335, now seen corresponding path program 1 times [2021-02-21 15:47:27,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:27,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711339099] [2021-02-21 15:47:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:27,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:28,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:28,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:28,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,223 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 15:47:28,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711339099] [2021-02-21 15:47:28,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:28,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:28,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158949591] [2021-02-21 15:47:28,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:28,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:28,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:28,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:28,249 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2021-02-21 15:47:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:28,465 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2021-02-21 15:47:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:28,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-21 15:47:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:28,477 INFO L225 Difference]: With dead ends: 79 [2021-02-21 15:47:28,477 INFO L226 Difference]: Without dead ends: 40 [2021-02-21 15:47:28,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:47:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-21 15:47:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-21 15:47:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-21 15:47:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-02-21 15:47:28,536 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2021-02-21 15:47:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:28,537 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-02-21 15:47:28,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-02-21 15:47:28,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 15:47:28,539 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:28,540 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] [2021-02-21 15:47:28,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:28,540 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:28,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1243775035, now seen corresponding path program 1 times [2021-02-21 15:47:28,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:28,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755115303] [2021-02-21 15:47:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:28,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:28,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:28,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:28,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:28,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:28,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:28,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:28,757 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 15:47:28,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755115303] [2021-02-21 15:47:28,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:28,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:47:28,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684302633] [2021-02-21 15:47:28,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:47:28,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:28,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:47:28,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:47:28,762 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2021-02-21 15:47:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:29,032 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-02-21 15:47:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:47:29,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-02-21 15:47:29,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:29,036 INFO L225 Difference]: With dead ends: 59 [2021-02-21 15:47:29,036 INFO L226 Difference]: Without dead ends: 44 [2021-02-21 15:47:29,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 15:47:29,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-21 15:47:29,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-02-21 15:47:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 15:47:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-02-21 15:47:29,052 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2021-02-21 15:47:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:29,052 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-02-21 15:47:29,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:47:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-02-21 15:47:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:29,054 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:29,054 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 15:47:29,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:29,055 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:29,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2128381336, now seen corresponding path program 1 times [2021-02-21 15:47:29,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:29,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282494481] [2021-02-21 15:47:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:29,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:29,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:29,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:29,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:29,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:29,226 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 15:47:29,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282494481] [2021-02-21 15:47:29,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:29,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:47:29,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967334567] [2021-02-21 15:47:29,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:47:29,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:29,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:47:29,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:47:29,230 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2021-02-21 15:47:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:29,432 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-02-21 15:47:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:47:29,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-02-21 15:47:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:29,436 INFO L225 Difference]: With dead ends: 63 [2021-02-21 15:47:29,436 INFO L226 Difference]: Without dead ends: 48 [2021-02-21 15:47:29,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:47:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-21 15:47:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-02-21 15:47:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 15:47:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-02-21 15:47:29,468 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2021-02-21 15:47:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:29,469 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-02-21 15:47:29,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:47:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-02-21 15:47:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:29,471 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:29,471 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 15:47:29,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 15:47:29,472 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash 331429977, now seen corresponding path program 1 times [2021-02-21 15:47:29,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:29,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980394493] [2021-02-21 15:47:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:29,541 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:29,564 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:29,595 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:29,596 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:29,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 15:47:29,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:29 BoogieIcfgContainer [2021-02-21 15:47:29,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:29,638 INFO L168 Benchmark]: Toolchain (without parser) took 3156.20 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 78.0 MB in the end (delta: 50.8 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:29,639 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 125.4 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:29,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.02 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 116.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:29,641 INFO L168 Benchmark]: Boogie Preprocessor took 54.13 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 114.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:29,642 INFO L168 Benchmark]: RCFGBuilder took 788.35 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 127.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:29,643 INFO L168 Benchmark]: TraceAbstraction took 1982.34 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 78.0 MB in the end (delta: 49.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:29,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 125.4 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 313.02 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 116.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.13 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 114.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 788.35 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 127.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1982.34 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 78.0 MB in the end (delta: 49.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; VAL [y=0] [L78] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967306, \old(y)=0] [L48] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967306] [L21] __uint32_t msw, lsw; VAL [\old(x)=4294967306, x=4294967306] [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967306, lsw=4294967297, msw=4293918721, x=4294967306] [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967306, lsw=4294967297, msw=4293918721, x=4294967306] [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967306, lsw=4294967297, msw=4293918721, x=4294967306] [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; VAL [\old(x)=4294967306, \result=0, lsw=4294967297, msw=4293918721, x=4294967306] [L48] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967306, \old(y)=0, __fpclassify_double(x)=0, x=4294967306, y=0] [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; VAL [\old(x)=4294967306, \old(y)=0, \result=0, x=4294967306, y=0] [L78] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0, x=4294967306, y=0] [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=0, x=4294967306, y=0] [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() VAL [res=0, x=4294967306, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 50 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: 135 SDtfs, 24 SDslu, 254 SDs, 0 SdLazy, 180 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5598 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...