/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/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:36:27,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:36:27,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:36:27,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:36:27,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:36:27,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:36:27,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:36:27,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:36:27,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:36:27,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:36:27,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:36:27,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:36:27,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:36:27,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:36:27,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:36:27,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:36:27,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:36:27,860 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 22:36:27,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:36:27,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:36:27,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:36:27,887 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:36:27,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:36:27,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:36:27,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:36:27,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:36:27,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:36:27,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:36:27,889 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:36:27,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:36:27,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:36:27,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:36:27,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:36:27,891 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:36:27,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:36:27,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:36:27,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:36:27,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:36:27,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:36:27,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:36:27,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:36:28,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:36:28,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:36:28,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:36:28,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:36:28,315 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:36:28,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2021-02-23 22:36:28,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62861c5e/b47ef3d735a04ccdb3212eed6a2450c9/FLAG61dac9485 [2021-02-23 22:36:28,935 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:36:28,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2021-02-23 22:36:28,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62861c5e/b47ef3d735a04ccdb3212eed6a2450c9/FLAG61dac9485 [2021-02-23 22:36:29,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62861c5e/b47ef3d735a04ccdb3212eed6a2450c9 [2021-02-23 22:36:29,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:36:29,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:36:29,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:29,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:36:29,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:36:29,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6726f420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29, skipping insertion in model container [2021-02-23 22:36:29,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:36:29,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:36:29,527 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c[1719,1732] [2021-02-23 22:36:29,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:29,539 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:36:29,564 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c[1719,1732] [2021-02-23 22:36:29,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:29,581 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:36:29,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29 WrapperNode [2021-02-23 22:36:29,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:29,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:36:29,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:36:29,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:36:29,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (1/1) ... [2021-02-23 22:36:29,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:36:29,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:36:29,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:36:29,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:36:29,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (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 22:36:29,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:36:29,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:36:29,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:36:29,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-02-23 22:36:29,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2021-02-23 22:36:29,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-23 22:36:29,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:36:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:36:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:36:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:36:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:36:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-02-23 22:36:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:36:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:36:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:36:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2021-02-23 22:36:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-23 22:36:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:36:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:36:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:36:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:36:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:36:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:36:30,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:36:30,174 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 22:36:30,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:30 BoogieIcfgContainer [2021-02-23 22:36:30,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:36:30,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:36:30,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:36:30,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:36:30,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:36:29" (1/3) ... [2021-02-23 22:36:30,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16535f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:30, skipping insertion in model container [2021-02-23 22:36:30,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:29" (2/3) ... [2021-02-23 22:36:30,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16535f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:30, skipping insertion in model container [2021-02-23 22:36:30,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:30" (3/3) ... [2021-02-23 22:36:30,186 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-02-23 22:36:30,193 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:36:30,198 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:36:30,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:36:30,246 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:36:30,247 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:36:30,247 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:36:30,247 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:36:30,247 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:36:30,247 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:36:30,248 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:36:30,248 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:36:30,271 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-02-23 22:36:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:36:30,284 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:30,285 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] [2021-02-23 22:36:30,285 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1519361119, now seen corresponding path program 1 times [2021-02-23 22:36:30,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:30,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769768393] [2021-02-23 22:36:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:30,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:30,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:30,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:30,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:30,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:30,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:30,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:30,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:30,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:30,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:30,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:30,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:30,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:30,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:30,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:30,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:30,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-23 22:36:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:30,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:30,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:30,681 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 22:36:30,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769768393] [2021-02-23 22:36:30,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:30,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:36:30,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674155638] [2021-02-23 22:36:30,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:36:30,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:30,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:36:30,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:36:30,729 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-02-23 22:36:31,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:31,144 INFO L93 Difference]: Finished difference Result 133 states and 154 transitions. [2021-02-23 22:36:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:36:31,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2021-02-23 22:36:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:31,156 INFO L225 Difference]: With dead ends: 133 [2021-02-23 22:36:31,156 INFO L226 Difference]: Without dead ends: 69 [2021-02-23 22:36:31,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 22:36:31,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-02-23 22:36:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-02-23 22:36:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-23 22:36:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2021-02-23 22:36:31,218 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 42 [2021-02-23 22:36:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:31,218 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2021-02-23 22:36:31,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:36:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2021-02-23 22:36:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 22:36:31,222 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:31,222 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] [2021-02-23 22:36:31,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:36:31,223 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:31,224 INFO L82 PathProgramCache]: Analyzing trace with hash 731683279, now seen corresponding path program 1 times [2021-02-23 22:36:31,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:31,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835299863] [2021-02-23 22:36:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:31,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 22:36:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,431 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 22:36:31,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835299863] [2021-02-23 22:36:31,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:31,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:36:31,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654943741] [2021-02-23 22:36:31,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:36:31,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:31,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:36:31,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:36:31,436 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 6 states. [2021-02-23 22:36:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:31,647 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2021-02-23 22:36:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:36:31,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2021-02-23 22:36:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:31,651 INFO L225 Difference]: With dead ends: 90 [2021-02-23 22:36:31,651 INFO L226 Difference]: Without dead ends: 74 [2021-02-23 22:36:31,652 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 22:36:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-02-23 22:36:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-02-23 22:36:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 22:36:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-02-23 22:36:31,668 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 49 [2021-02-23 22:36:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:31,669 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-02-23 22:36:31,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:36:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-02-23 22:36:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 22:36:31,671 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:31,672 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] [2021-02-23 22:36:31,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:36:31,672 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:31,673 INFO L82 PathProgramCache]: Analyzing trace with hash 217536091, now seen corresponding path program 1 times [2021-02-23 22:36:31,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:31,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50144564] [2021-02-23 22:36:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 22:36:31,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-23 22:36:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:31,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:31,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:31,836 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 22:36:31,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50144564] [2021-02-23 22:36:31,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:31,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:36:31,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666751618] [2021-02-23 22:36:31,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:36:31,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:31,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:36:31,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:36:31,839 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 6 states. [2021-02-23 22:36:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:32,043 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2021-02-23 22:36:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:36:32,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2021-02-23 22:36:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:32,045 INFO L225 Difference]: With dead ends: 94 [2021-02-23 22:36:32,045 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 22:36:32,046 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 22:36:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 22:36:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-02-23 22:36:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 22:36:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-02-23 22:36:32,060 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 52 [2021-02-23 22:36:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:32,061 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-02-23 22:36:32,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:36:32,061 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-02-23 22:36:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 22:36:32,063 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:32,063 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] [2021-02-23 22:36:32,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:36:32,064 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:32,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:32,064 INFO L82 PathProgramCache]: Analyzing trace with hash -177410533, now seen corresponding path program 1 times [2021-02-23 22:36:32,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:32,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769317304] [2021-02-23 22:36:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:32,099 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:32,141 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:32,193 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:36:32,193 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:36:32,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:36:32,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:36:32 BoogieIcfgContainer [2021-02-23 22:36:32,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:36:32,269 INFO L168 Benchmark]: Toolchain (without parser) took 2960.07 ms. Allocated memory was 174.1 MB in the beginning and 232.8 MB in the end (delta: 58.7 MB). Free memory was 150.1 MB in the beginning and 86.5 MB in the end (delta: 63.5 MB). Peak memory consumption was 122.9 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:32,270 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 174.1 MB. Free memory is still 148.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:32,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.14 ms. Allocated memory is still 174.1 MB. Free memory was 149.1 MB in the beginning and 138.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:32,271 INFO L168 Benchmark]: Boogie Preprocessor took 37.71 ms. Allocated memory is still 174.1 MB. Free memory was 138.7 MB in the beginning and 137.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:32,272 INFO L168 Benchmark]: RCFGBuilder took 554.82 ms. Allocated memory is still 174.1 MB. Free memory was 137.0 MB in the beginning and 151.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:32,273 INFO L168 Benchmark]: TraceAbstraction took 2088.81 ms. Allocated memory was 174.1 MB in the beginning and 232.8 MB in the end (delta: 58.7 MB). Free memory was 150.5 MB in the beginning and 86.5 MB in the end (delta: 63.9 MB). Peak memory consumption was 122.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:32,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 174.1 MB. Free memory is still 148.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.14 ms. Allocated memory is still 174.1 MB. Free memory was 149.1 MB in the beginning and 138.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.71 ms. Allocated memory is still 174.1 MB. Free memory was 138.7 MB in the beginning and 137.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 554.82 ms. Allocated memory is still 174.1 MB. Free memory was 137.0 MB in the beginning and 151.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2088.81 ms. Allocated memory was 174.1 MB in the beginning and 232.8 MB in the end (delta: 58.7 MB). Free memory was 150.5 MB in the beginning and 86.5 MB in the end (delta: 63.9 MB). Peak memory consumption was 122.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 67]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 63. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L64] CALL, EXPR fmax_float(x, y) VAL [\old(x)=2139095046, \old(y)=2139095049] [L45] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095046] [L22] __uint32_t w; VAL [\old(x)=2139095046, x=2139095046] [L25] ieee_float_shape_type gf_u; VAL [\old(x)=2139095046, gf_u={3:0}, x=2139095046] [L26] gf_u.value = (x) VAL [\old(x)=2139095046, gf_u={3:0}, x=2139095046] [L27] EXPR gf_u.word VAL [\old(x)=2139095046, gf_u={3:0}, gf_u.word=2139095041, x=2139095046] [L27] (w) = gf_u.word VAL [\old(x)=2139095046, gf_u={3:0}, gf_u.word=2139095041, w=2139095041, x=2139095046] [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095046, w=2139095041, x=2139095046] [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095046, w=2139095041, x=2139095046] [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095046, w=2139095041, x=2139095046] [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) VAL [\old(x)=2139095046, w=2139095041, x=2139095046] [L41] return 0; VAL [\old(x)=2139095046, \result=0, w=2139095041, x=2139095046] [L45] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095046, \old(y)=2139095049, __fpclassify_float(x)=0, x=2139095046, y=2139095049] [L45] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=2139095046, \old(y)=2139095049, __fpclassify_float(x)=0, x=2139095046, y=2139095049] [L46] return y; VAL [\old(x)=2139095046, \old(y)=2139095049, \result=2139095049, x=2139095046, y=2139095049] [L64] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095049, x=2139095046, y=2139095049] [L64] float res = fmax_float(x, y); VAL [fmax_float(x, y)=2139095049, res=2139095049, x=2139095046, y=2139095049] [L66] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095049] [L56] return x != x; VAL [\old(x)=2139095049, \result=0, x=2139095049] [L66] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095049, x=2139095046, y=2139095049] [L66] COND TRUE !isnan_float(res) VAL [isnan_float(res)=0, res=2139095049, x=2139095046, y=2139095049] [L67] reach_error() VAL [res=2139095049, x=2139095046, y=2139095049] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 59 SDslu, 396 SDs, 0 SdLazy, 309 SolverSat, 29 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=76occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 14938 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...