/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:34:50,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:34:50,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:34:50,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:34:50,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:34:50,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:34:50,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:34:50,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:34:50,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:34:50,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:34:50,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:34:50,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:34:50,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:34:50,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:34:50,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:34:50,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:34:50,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:34:50,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:34:50,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:34:50,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:34:50,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:34:50,725 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:34:50,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:34:50,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:34:50,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:34:50,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:34:50,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:34:50,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:34:50,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:34:50,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:34:50,728 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:34:50,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:34:50,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:34:50,729 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:34:50,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:34:50,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:34:50,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:34:50,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:34:50,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:34:50,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:34:50,730 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:34:51,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:34:51,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:34:51,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:34:51,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:34:51,199 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:34:51,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-23 22:34:51,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171facdb3/3a88bd556a264d3da4fa8a7e8e44f098/FLAG91ef97981 [2021-02-23 22:34:51,934 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:34:51,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-23 22:34:51,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171facdb3/3a88bd556a264d3da4fa8a7e8e44f098/FLAG91ef97981 [2021-02-23 22:34:52,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171facdb3/3a88bd556a264d3da4fa8a7e8e44f098 [2021-02-23 22:34:52,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:34:52,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:34:52,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:52,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:34:52,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:34:52,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171d71ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52, skipping insertion in model container [2021-02-23 22:34:52,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:34:52,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:34:52,551 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] [2021-02-23 22:34:52,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:52,564 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:34:52,591 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] [2021-02-23 22:34:52,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:52,609 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:34:52,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52 WrapperNode [2021-02-23 22:34:52,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:52,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:34:52,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:34:52,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:34:52,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (1/1) ... [2021-02-23 22:34:52,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:34:52,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:34:52,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:34:52,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:34:52,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:34:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:34:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:34:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:34:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:34:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 22:34:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-23 22:34:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:34:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:34:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:34:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:34:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:34:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 22:34:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:34:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 22:34:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:34:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:34:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:34:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-23 22:34:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:34:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:34:52,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:34:52,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:34:52,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:34:52,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:34:53,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:34:53,338 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 22:34:53,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:53 BoogieIcfgContainer [2021-02-23 22:34:53,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:34:53,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:34:53,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:34:53,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:34:53,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:52" (1/3) ... [2021-02-23 22:34:53,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa495dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:53, skipping insertion in model container [2021-02-23 22:34:53,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:52" (2/3) ... [2021-02-23 22:34:53,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa495dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:53, skipping insertion in model container [2021-02-23 22:34:53,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:53" (3/3) ... [2021-02-23 22:34:53,349 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2021-02-23 22:34:53,355 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:34:53,360 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:34:53,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:34:53,398 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:34:53,398 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:34:53,398 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:34:53,398 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:34:53,398 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:34:53,398 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:34:53,399 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:34:53,399 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:34:53,416 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2021-02-23 22:34:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 22:34:53,427 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:53,428 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] [2021-02-23 22:34:53,428 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:53,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1066152697, now seen corresponding path program 1 times [2021-02-23 22:34:53,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:53,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277674286] [2021-02-23 22:34:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 22:34:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 22:34:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:53,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:53,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:34:53,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277674286] [2021-02-23 22:34:53,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:53,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:34:53,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085173094] [2021-02-23 22:34:53,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:34:53,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:53,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:34:53,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:34:53,802 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2021-02-23 22:34:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:54,150 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-02-23 22:34:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:34:54,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-23 22:34:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:54,175 INFO L225 Difference]: With dead ends: 138 [2021-02-23 22:34:54,175 INFO L226 Difference]: Without dead ends: 75 [2021-02-23 22:34:54,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 22:34:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-23 22:34:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-02-23 22:34:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-23 22:34:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-02-23 22:34:54,289 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 45 [2021-02-23 22:34:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:54,290 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-02-23 22:34:54,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:34:54,290 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-02-23 22:34:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-23 22:34:54,293 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:54,293 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] [2021-02-23 22:34:54,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:34:54,294 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1670016673, now seen corresponding path program 1 times [2021-02-23 22:34:54,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:54,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078710138] [2021-02-23 22:34:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 22:34:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 22:34:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:54,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:34:54,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078710138] [2021-02-23 22:34:54,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:54,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:34:54,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158343545] [2021-02-23 22:34:54,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:34:54,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:54,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:34:54,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:34:54,579 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 6 states. [2021-02-23 22:34:54,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:54,855 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2021-02-23 22:34:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:34:54,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2021-02-23 22:34:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:54,865 INFO L225 Difference]: With dead ends: 89 [2021-02-23 22:34:54,865 INFO L226 Difference]: Without dead ends: 80 [2021-02-23 22:34:54,866 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 22:34:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-23 22:34:54,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-02-23 22:34:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 22:34:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-23 22:34:54,882 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 55 [2021-02-23 22:34:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:54,883 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-23 22:34:54,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:34:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-23 22:34:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 22:34:54,885 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:54,886 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] [2021-02-23 22:34:54,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:34:54,886 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:54,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1013353920, now seen corresponding path program 1 times [2021-02-23 22:34:54,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:54,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315361041] [2021-02-23 22:34:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:54,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:54,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:54,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:55,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:55,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 22:34:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:55,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:55,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:55,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 22:34:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:55,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:55,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:55,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:55,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 22:34:55,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:55,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:55,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:34:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:55,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:55,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:55,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:55,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:34:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:34:55,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315361041] [2021-02-23 22:34:55,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:55,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:34:55,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408765892] [2021-02-23 22:34:55,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:34:55,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:55,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:34:55,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:34:55,088 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2021-02-23 22:34:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:55,299 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-02-23 22:34:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:34:55,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-02-23 22:34:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:55,301 INFO L225 Difference]: With dead ends: 93 [2021-02-23 22:34:55,301 INFO L226 Difference]: Without dead ends: 84 [2021-02-23 22:34:55,302 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 22:34:55,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-02-23 22:34:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-02-23 22:34:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 22:34:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-23 22:34:55,315 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 58 [2021-02-23 22:34:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:55,316 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-23 22:34:55,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:34:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-23 22:34:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 22:34:55,330 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:55,330 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] [2021-02-23 22:34:55,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:34:55,331 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:55,331 INFO L82 PathProgramCache]: Analyzing trace with hash -584569344, now seen corresponding path program 1 times [2021-02-23 22:34:55,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:55,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828558547] [2021-02-23 22:34:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:55,361 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:55,385 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:55,418 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:34:55,419 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:34:55,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:34:55,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:55 BoogieIcfgContainer [2021-02-23 22:34:55,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:34:55,476 INFO L168 Benchmark]: Toolchain (without parser) took 3161.06 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.8 MB in the beginning and 152.5 MB in the end (delta: -25.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,477 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:34:55,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,479 INFO L168 Benchmark]: Boogie Preprocessor took 41.64 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,480 INFO L168 Benchmark]: RCFGBuilder took 686.39 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 127.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,481 INFO L168 Benchmark]: TraceAbstraction took 2132.75 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.3 MB in the beginning and 152.5 MB in the end (delta: -25.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:55,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.64 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 686.39 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 127.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2132.75 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.3 MB in the beginning and 152.5 MB in the end (delta: -25.2 MB). Peak memory consumption was 6.8 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(); VAL [__VERIFIER_nondet_double()=4294967299, x=4294967299] [L63] double y = 0.0 / 0.0; VAL [x=4294967299] [L64] CALL, EXPR isnan_double(x) VAL [\old(x)=4294967299] [L18] return x != x; VAL [\old(x)=4294967299, \result=0, x=4294967299] [L64] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=4294967299] [L64] COND TRUE !isnan_double(x) VAL [isnan_double(x)=0, x=4294967299] [L66] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967299, \old(y)=4294967302] [L47] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967299] [L20] __uint32_t msw, lsw; VAL [\old(x)=4294967299, x=4294967299] [L23] ieee_double_shape_type ew_u; VAL [\old(x)=4294967299, ew_u={3:0}, x=4294967299] [L24] ew_u.value = (x) VAL [\old(x)=4294967299, ew_u={3:0}, x=4294967299] [L25] EXPR ew_u.parts.msw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.msw=2146435073, x=4294967299] [L25] (msw) = ew_u.parts.msw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.msw=2146435073, msw=2146435073, x=4294967299] [L26] EXPR ew_u.parts.lsw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.lsw=4294967297, msw=2146435073, x=4294967299] [L26] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=2146435073, x=4294967299] [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967299, lsw=4294967297, msw=2146435073, x=4294967299] [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967299, lsw=4294967297, msw=2146435073, x=4294967299] [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967299, lsw=4294967297, msw=2146435073, x=4294967299] [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) VAL [\old(x)=4294967299, lsw=4294967297, msw=2146435073, x=4294967299] [L43] return 0; VAL [\old(x)=4294967299, \result=0, lsw=4294967297, msw=2146435073, x=4294967299] [L47] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967299, \old(y)=4294967302, __fpclassify_double(x)=0, x=4294967299, y=4294967302] [L47] COND TRUE __fpclassify_double(x) == 0 VAL [\old(x)=4294967299, \old(y)=4294967302, __fpclassify_double(x)=0, x=4294967299, y=4294967302] [L48] return y; VAL [\old(x)=4294967299, \old(y)=4294967302, \result=4294967302, x=4294967299, y=4294967302] [L66] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967302, x=4294967299, y=4294967302] [L66] double res = fmin_double(x, y); VAL [fmin_double(x, y)=4294967302, res=4294967302, x=4294967299, y=4294967302] [L69] COND TRUE res != x VAL [res=4294967302, x=4294967299, y=4294967302] [L70] reach_error() VAL [res=4294967302, x=4294967299, y=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, 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, 0.4s 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=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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 17359 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...