/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/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:35,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:35,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:36,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:55:36,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:36,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:36,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:36,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:36,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:36,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:36,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:36,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:36,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:36,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:36,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:36,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:36,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:55:36,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:36,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:36,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:36,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:55:36,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:36,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:36,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:36,153 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:36,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:36,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:36,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:36,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:36,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:36,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:36,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:36,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:36,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:36,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:36,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:36,155 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:36,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:36,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:36,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:36,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:36,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:36,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:36,157 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:36,157 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:36,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:36,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:36,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:36,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:36,621 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:36,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-24 03:55:36,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74888898c/8c922dc37ba94afb810a6b69bc67e726/FLAG742c76c04 [2021-02-24 03:55:37,309 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:37,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-24 03:55:37,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74888898c/8c922dc37ba94afb810a6b69bc67e726/FLAG742c76c04 [2021-02-24 03:55:37,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74888898c/8c922dc37ba94afb810a6b69bc67e726 [2021-02-24 03:55:37,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:37,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:37,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:37,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:37,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:37,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:37,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18159e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37, skipping insertion in model container [2021-02-24 03:55:37,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:37,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:37,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:37,920 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_1231b.c[1765,1778] [2021-02-24 03:55:37,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:37,935 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:37,965 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_1231b.c[1765,1778] [2021-02-24 03:55:37,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:37,987 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:37,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37 WrapperNode [2021-02-24 03:55:37,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:37,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:37,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:37,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:38,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:38,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:38,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:38,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:38,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:38,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:38,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (1/1) ... [2021-02-24 03:55:38,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:38,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:38,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:38,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:38,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (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 [2021-02-24 03:55:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-24 03:55:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-24 03:55:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-24 03:55:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-24 03:55:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-24 03:55:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-24 03:55:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-24 03:55:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:38,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:38,870 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 03:55:38,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:38 BoogieIcfgContainer [2021-02-24 03:55:38,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:38,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:38,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:38,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:38,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:37" (1/3) ... [2021-02-24 03:55:38,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11329727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:38, skipping insertion in model container [2021-02-24 03:55:38,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:37" (2/3) ... [2021-02-24 03:55:38,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11329727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:38, skipping insertion in model container [2021-02-24 03:55:38,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:38" (3/3) ... [2021-02-24 03:55:38,882 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2021-02-24 03:55:38,889 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:38,895 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:38,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:38,941 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:38,942 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:38,942 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:38,942 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:38,942 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:38,942 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:38,942 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:38,943 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2021-02-24 03:55:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 03:55:38,972 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:38,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:55:38,973 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:38,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:38,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1066152697, now seen corresponding path program 1 times [2021-02-24 03:55:38,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:38,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699813832] [2021-02-24 03:55:38,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:39,070 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:39,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:39,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:39,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:39,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:39,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:39,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:39,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 03:55:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:39,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:39,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-24 03:55:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:39,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:39,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:39,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:39,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:39,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:39,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:39,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:39,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:39,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699813832] [2021-02-24 03:55:39,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:39,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:55:39,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500987761] [2021-02-24 03:55:39,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:55:39,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:39,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:55:39,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:55:39,431 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2021-02-24 03:55:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:39,843 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-02-24 03:55:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:55:39,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-24 03:55:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:39,872 INFO L225 Difference]: With dead ends: 138 [2021-02-24 03:55:39,873 INFO L226 Difference]: Without dead ends: 75 [2021-02-24 03:55:39,878 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 [2021-02-24 03:55:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-24 03:55:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-02-24 03:55:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-24 03:55:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-02-24 03:55:39,951 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 45 [2021-02-24 03:55:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:39,952 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-02-24 03:55:39,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:55:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-02-24 03:55:39,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-24 03:55:39,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:39,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:55:39,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:55:39,957 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:39,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1670016673, now seen corresponding path program 1 times [2021-02-24 03:55:39,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:39,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849181183] [2021-02-24 03:55:39,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:39,963 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 03:55:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-24 03:55:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:40,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:40,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849181183] [2021-02-24 03:55:40,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:40,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:55:40,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054163675] [2021-02-24 03:55:40,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:55:40,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:40,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:55:40,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:55:40,283 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 6 states. [2021-02-24 03:55:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:40,626 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2021-02-24 03:55:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:55:40,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2021-02-24 03:55:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:40,639 INFO L225 Difference]: With dead ends: 89 [2021-02-24 03:55:40,639 INFO L226 Difference]: Without dead ends: 80 [2021-02-24 03:55:40,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:55:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-24 03:55:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-02-24 03:55:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-24 03:55:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-24 03:55:40,667 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 55 [2021-02-24 03:55:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:40,667 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-24 03:55:40,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:55:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-24 03:55:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 03:55:40,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:40,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:55:40,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:55:40,670 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:40,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1013353920, now seen corresponding path program 1 times [2021-02-24 03:55:40,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:40,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605045064] [2021-02-24 03:55:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:40,675 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 03:55:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-24 03:55:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:55:40,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:40,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:40,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:40,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:40,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605045064] [2021-02-24 03:55:40,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:40,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:55:40,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230851384] [2021-02-24 03:55:40,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:55:40,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:40,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:55:40,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:55:40,898 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2021-02-24 03:55:41,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:41,146 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-02-24 03:55:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:55:41,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-02-24 03:55:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:41,154 INFO L225 Difference]: With dead ends: 93 [2021-02-24 03:55:41,154 INFO L226 Difference]: Without dead ends: 84 [2021-02-24 03:55:41,156 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 [2021-02-24 03:55:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-02-24 03:55:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-02-24 03:55:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-24 03:55:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-24 03:55:41,196 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 58 [2021-02-24 03:55:41,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:41,200 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-24 03:55:41,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:55:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-24 03:55:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 03:55:41,204 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:41,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:55:41,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:55:41,205 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:41,210 INFO L82 PathProgramCache]: Analyzing trace with hash -584569344, now seen corresponding path program 1 times [2021-02-24 03:55:41,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:41,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173219230] [2021-02-24 03:55:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:41,213 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:41,269 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:41,329 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:41,383 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:55:41,383 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:55:41,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:55:41,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:55:41 BoogieIcfgContainer [2021-02-24 03:55:41,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:55:41,412 INFO L168 Benchmark]: Toolchain (without parser) took 3741.92 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 142.5 MB in the beginning and 68.7 MB in the end (delta: 73.8 MB). Peak memory consumption was 108.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:41,419 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 165.7 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:41,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.65 ms. Allocated memory is still 165.7 MB. Free memory was 141.5 MB in the beginning and 130.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:41,434 INFO L168 Benchmark]: Boogie Preprocessor took 48.65 ms. Allocated memory is still 165.7 MB. Free memory was 130.5 MB in the beginning and 128.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:41,438 INFO L168 Benchmark]: RCFGBuilder took 832.84 ms. Allocated memory is still 165.7 MB. Free memory was 128.9 MB in the beginning and 143.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:41,445 INFO L168 Benchmark]: TraceAbstraction took 2534.94 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 143.3 MB in the beginning and 68.7 MB in the end (delta: 74.6 MB). Peak memory consumption was 109.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:41,451 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 165.7 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 305.65 ms. Allocated memory is still 165.7 MB. Free memory was 141.5 MB in the beginning and 130.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.65 ms. Allocated memory is still 165.7 MB. Free memory was 130.5 MB in the beginning and 128.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 832.84 ms. Allocated memory is still 165.7 MB. Free memory was 128.9 MB in the beginning and 143.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2534.94 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 143.3 MB in the beginning and 68.7 MB in the end (delta: 74.6 MB). Peak memory consumption was 109.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: 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 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L64] CALL, EXPR isnan_double(x) [L18] return x != x; [L64] RET, EXPR isnan_double(x) [L64] COND TRUE !isnan_double(x) [L66] CALL, EXPR fmin_double(x, y) [L47] CALL, EXPR __fpclassify_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] RET, EXPR __fpclassify_double(x) [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] RET, EXPR fmin_double(x, y) [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L70] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 246 SDtfs, 97 SDslu, 393 SDs, 0 SdLazy, 337 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...