/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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:12:55,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:12:55,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:12:55,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:12:55,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:12:55,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:12:55,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:12:55,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:12:55,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:12:55,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:12:55,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:12:55,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:12:55,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:12:55,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:12:55,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:12:55,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:12:55,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:12:55,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:12:55,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:12:55,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:12:55,402 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 [2021-02-23 13:12:55,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:12:55,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:12:55,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:12:55,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:12:55,460 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:12:55,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:12:55,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:12:55,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:12:55,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:12:55,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:12:55,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:12:55,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:12:55,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:12:55,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:12:55,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:12:55,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:12:55,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:12:55,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:12:55,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:12:55,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:12:55,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:55,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:12:55,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:12:55,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:12:55,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:12:55,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:12:55,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:12:55,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:12:55,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:12:55,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:12:55,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:12:55,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:12:55,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:12:55,934 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:12:55,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2021-02-23 13:12:56,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0271a1926/2ab54a2529964dc294dc9dfcdc6f42c5/FLAG9f8eb174d [2021-02-23 13:12:56,666 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:12:56,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2021-02-23 13:12:56,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0271a1926/2ab54a2529964dc294dc9dfcdc6f42c5/FLAG9f8eb174d [2021-02-23 13:12:57,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0271a1926/2ab54a2529964dc294dc9dfcdc6f42c5 [2021-02-23 13:12:57,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:12:57,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:12:57,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:57,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:12:57,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:12:57,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf56fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57, skipping insertion in model container [2021-02-23 13:12:57,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:12:57,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:12:57,257 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_1251b.c[2080,2093] [2021-02-23 13:12:57,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:57,271 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:12:57,302 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_1251b.c[2080,2093] [2021-02-23 13:12:57,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:57,323 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:12:57,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57 WrapperNode [2021-02-23 13:12:57,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:57,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:12:57,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:12:57,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:12:57,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (1/1) ... [2021-02-23 13:12:57,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:12:57,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:12:57,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:12:57,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:12:57,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:57,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:12:57,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:12:57,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:12:57,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 13:12:57,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 13:12:57,488 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2021-02-23 13:12:57,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:12:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:12:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:12:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:12:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:12:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 13:12:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 13:12:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 13:12:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:12:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:12:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:12:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2021-02-23 13:12:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:12:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:12:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:12:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:12:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:12:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:12:58,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:12:58,052 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:12:58,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:58 BoogieIcfgContainer [2021-02-23 13:12:58,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:12:58,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:12:58,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:12:58,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:12:58,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:12:57" (1/3) ... [2021-02-23 13:12:58,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f92b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:58, skipping insertion in model container [2021-02-23 13:12:58,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:57" (2/3) ... [2021-02-23 13:12:58,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f92b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:58, skipping insertion in model container [2021-02-23 13:12:58,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:58" (3/3) ... [2021-02-23 13:12:58,074 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2021-02-23 13:12:58,082 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:12:58,089 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:12:58,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:12:58,148 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:12:58,148 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:12:58,148 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:12:58,148 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:12:58,148 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:12:58,149 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:12:58,149 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:12:58,149 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:12:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2021-02-23 13:12:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:12:58,185 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:58,186 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] [2021-02-23 13:12:58,187 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:58,207 INFO L82 PathProgramCache]: Analyzing trace with hash -99370395, now seen corresponding path program 1 times [2021-02-23 13:12:58,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:58,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599138232] [2021-02-23 13:12:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:58,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:58,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:58,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:58,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:58,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:58,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:58,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:58,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 13:12:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:58,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:58,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:58,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:58,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:58,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:58,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:58,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:58,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:58,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:12:58,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599138232] [2021-02-23 13:12:58,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:58,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:12:58,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843749638] [2021-02-23 13:12:58,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:12:58,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:58,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:12:58,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:12:58,705 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2021-02-23 13:12:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:58,977 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2021-02-23 13:12:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:12:58,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-23 13:12:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:58,989 INFO L225 Difference]: With dead ends: 72 [2021-02-23 13:12:58,989 INFO L226 Difference]: Without dead ends: 37 [2021-02-23 13:12:58,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:12:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-23 13:12:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-23 13:12:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-23 13:12:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-02-23 13:12:59,044 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2021-02-23 13:12:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:59,045 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-02-23 13:12:59,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:12:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-02-23 13:12:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 13:12:59,048 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:59,048 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] [2021-02-23 13:12:59,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:12:59,048 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:59,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1474758777, now seen corresponding path program 1 times [2021-02-23 13:12:59,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:59,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176523121] [2021-02-23 13:12:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 13:12:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:59,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:12:59,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176523121] [2021-02-23 13:12:59,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:59,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:12:59,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118931815] [2021-02-23 13:12:59,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:12:59,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:59,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:12:59,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:12:59,272 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 6 states. [2021-02-23 13:12:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:59,544 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2021-02-23 13:12:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:12:59,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-02-23 13:12:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:59,550 INFO L225 Difference]: With dead ends: 47 [2021-02-23 13:12:59,551 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 13:12:59,554 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 [2021-02-23 13:12:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 13:12:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-23 13:12:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-23 13:12:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-02-23 13:12:59,604 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-02-23 13:12:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:59,604 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-02-23 13:12:59,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:12:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-02-23 13:12:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 13:12:59,606 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:59,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:12:59,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:12:59,607 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:59,610 INFO L82 PathProgramCache]: Analyzing trace with hash -165002274, now seen corresponding path program 1 times [2021-02-23 13:12:59,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:59,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020927085] [2021-02-23 13:12:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 13:12:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:59,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:59,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:59,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:59,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:12:59,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020927085] [2021-02-23 13:12:59,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:59,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:12:59,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055652758] [2021-02-23 13:12:59,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:12:59,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:59,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:12:59,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:12:59,809 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2021-02-23 13:12:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:59,937 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-02-23 13:12:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:12:59,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2021-02-23 13:12:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:59,939 INFO L225 Difference]: With dead ends: 51 [2021-02-23 13:12:59,939 INFO L226 Difference]: Without dead ends: 45 [2021-02-23 13:12:59,940 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 [2021-02-23 13:12:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-02-23 13:12:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2021-02-23 13:12:59,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-23 13:12:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-02-23 13:12:59,950 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2021-02-23 13:12:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:59,950 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-02-23 13:12:59,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:12:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-02-23 13:12:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 13:12:59,952 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:59,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:12:59,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:12:59,952 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:59,953 INFO L82 PathProgramCache]: Analyzing trace with hash -361515779, now seen corresponding path program 1 times [2021-02-23 13:12:59,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:59,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207748788] [2021-02-23 13:12:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:59,980 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:00,004 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:00,033 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:13:00,034 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:13:00,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:13:00,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:13:00 BoogieIcfgContainer [2021-02-23 13:13:00,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:13:00,074 INFO L168 Benchmark]: Toolchain (without parser) took 3040.55 ms. Allocated memory is still 158.3 MB. Free memory was 133.4 MB in the beginning and 83.2 MB in the end (delta: 50.2 MB). Peak memory consumption was 51.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:00,074 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory was 130.8 MB in the beginning and 130.7 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:13:00,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.12 ms. Allocated memory is still 158.3 MB. Free memory was 132.2 MB in the beginning and 121.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:00,076 INFO L168 Benchmark]: Boogie Preprocessor took 43.22 ms. Allocated memory is still 158.3 MB. Free memory was 121.9 MB in the beginning and 120.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:00,077 INFO L168 Benchmark]: RCFGBuilder took 687.84 ms. Allocated memory is still 158.3 MB. Free memory was 120.1 MB in the beginning and 134.8 MB in the end (delta: -14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:00,078 INFO L168 Benchmark]: TraceAbstraction took 2011.79 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 83.2 MB in the end (delta: 51.1 MB). Peak memory consumption was 52.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:00,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory was 130.8 MB in the beginning and 130.7 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.12 ms. Allocated memory is still 158.3 MB. Free memory was 132.2 MB in the beginning and 121.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.22 ms. Allocated memory is still 158.3 MB. Free memory was 121.9 MB in the beginning and 120.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 687.84 ms. Allocated memory is still 158.3 MB. Free memory was 120.1 MB in the beginning and 134.8 MB in the end (delta: -14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2011.79 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 83.2 MB in the end (delta: 51.1 MB). Peak memory consumption was 52.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: 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 79, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L66] double x = __VERIFIER_nondet_double(); [L67] double y = 0.0 / 0.0; VAL [x=4294967301] [L74] CALL, EXPR isnan_double(x) VAL [\old(x)=4294967301] [L18] return x != x; VAL [\old(x)=4294967301, \result=0, x=4294967301] [L74] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=4294967301] [L74] COND TRUE !isnan_double(x) [L76] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967301, \old(y)=4294967303] [L57] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301] [L29] __uint32_t msw, lsw; VAL [\old(x)=4294967301, x=4294967301] [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; VAL [\old(x)=4294967301, \result=0, lsw=4294967297, msw=4293918721, x=4294967301] [L57] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301, \old(y)=4294967303, __fpclassify_double(x)=0, x=4294967301, y=4294967303] [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; VAL [\old(x)=4294967301, \old(y)=4294967303, \result=4294967303, x=4294967301, y=4294967303] [L76] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967303, x=4294967301, y=4294967303] [L76] double res = fmax_double(x, y); [L79] COND TRUE res != x VAL [res=4294967303, x=4294967301, y=4294967303] [L80] reach_error() VAL [res=4294967303, x=4294967301, y=4294967303] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 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: 125 SDtfs, 48 SDslu, 201 SDs, 0 SdLazy, 171 SolverSat, 38 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0.5s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 7243 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...