/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/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:47:43,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:47:43,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:47:43,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:47:43,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:47:43,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:47:43,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:47:43,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:47:43,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:47:43,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:47:43,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:47:43,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:47:43,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:47:43,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:47:43,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:47:43,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:47:43,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:47:43,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:47:43,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:47:43,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:47:43,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:47:43,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:47:43,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:47:43,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:47:43,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:47:43,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:47:43,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:47:43,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:47:43,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:47:43,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:47:43,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:47:43,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:47:43,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:47:43,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:47:43,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:47:43,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:47:43,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:47:43,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:47:43,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:47:43,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:47:43,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:47:43,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:47:43,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:47:43,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:47:43,721 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:47:43,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:47:43,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:47:43,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:47:43,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:47:43,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:47:43,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:47:43,723 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:47:44,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:47:44,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:47:44,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:47:44,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:47:44,157 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:47:44,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-11-07 04:47:44,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06dfe74c/169d974dd978408f9b1f553d054d2ee7/FLAG07536d319 [2020-11-07 04:47:44,840 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:47:44,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-11-07 04:47:44,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06dfe74c/169d974dd978408f9b1f553d054d2ee7/FLAG07536d319 [2020-11-07 04:47:45,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06dfe74c/169d974dd978408f9b1f553d054d2ee7 [2020-11-07 04:47:45,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:47:45,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:47:45,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:45,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:47:45,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:47:45,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@839d0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45, skipping insertion in model container [2020-11-07 04:47:45,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:47:45,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:47:45,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:45,557 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:47:45,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:45,625 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:47:45,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45 WrapperNode [2020-11-07 04:47:45,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:45,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:47:45,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:47:45,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:47:45,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (1/1) ... [2020-11-07 04:47:45,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:47:45,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:47:45,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:47:45,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:47:45,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (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 [2020-11-07 04:47:45,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:47:45,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:47:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:47:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 04:47:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-11-07 04:47:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-11-07 04:47:45,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-11-07 04:47:45,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:47:45,785 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:47:45,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:47:45,786 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:47:45,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:47:45,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-07 04:47:45,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 04:47:45,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 04:47:45,787 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-11-07 04:47:45,788 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-11-07 04:47:45,788 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-11-07 04:47:45,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:47:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:47:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:47:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:47:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:47:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:47:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:47:46,501 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:47:46,501 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 04:47:46,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:46 BoogieIcfgContainer [2020-11-07 04:47:46,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:47:46,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:47:46,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:47:46,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:47:46,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:47:45" (1/3) ... [2020-11-07 04:47:46,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678cc411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:46, skipping insertion in model container [2020-11-07 04:47:46,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:45" (2/3) ... [2020-11-07 04:47:46,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678cc411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:46, skipping insertion in model container [2020-11-07 04:47:46,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:46" (3/3) ... [2020-11-07 04:47:46,513 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-07 04:47:46,544 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:47:46,550 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:47:46,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:47:46,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:47:46,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:47:46,590 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:47:46,590 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:47:46,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:47:46,590 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:47:46,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:47:46,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:47:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-11-07 04:47:46,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-07 04:47:46,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:46,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:47:46,626 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:46,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1333469154, now seen corresponding path program 1 times [2020-11-07 04:47:46,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:46,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746037990] [2020-11-07 04:47:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 04:47:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:47,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 04:47:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:47,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-11-07 04:47:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-07 04:47:47,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746037990] [2020-11-07 04:47:47,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:47,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 04:47:47,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866886764] [2020-11-07 04:47:47,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 04:47:47,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:47,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 04:47:47,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-07 04:47:47,236 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 9 states. [2020-11-07 04:47:48,159 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-07 04:47:48,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:48,921 INFO L93 Difference]: Finished difference Result 272 states and 338 transitions. [2020-11-07 04:47:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 04:47:48,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-11-07 04:47:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:48,937 INFO L225 Difference]: With dead ends: 272 [2020-11-07 04:47:48,937 INFO L226 Difference]: Without dead ends: 159 [2020-11-07 04:47:48,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-07 04:47:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-07 04:47:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2020-11-07 04:47:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-07 04:47:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2020-11-07 04:47:49,037 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 90 [2020-11-07 04:47:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:49,040 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2020-11-07 04:47:49,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 04:47:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2020-11-07 04:47:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-07 04:47:49,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:49,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:47:49,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:47:49,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:49,055 INFO L82 PathProgramCache]: Analyzing trace with hash 486932698, now seen corresponding path program 1 times [2020-11-07 04:47:49,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:49,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086765572] [2020-11-07 04:47:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 04:47:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:49,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 04:47:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:49,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-11-07 04:47:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-07 04:47:49,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086765572] [2020-11-07 04:47:49,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:47:49,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 04:47:49,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250826275] [2020-11-07 04:47:49,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 04:47:49,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:49,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 04:47:49,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-07 04:47:49,410 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand 10 states. [2020-11-07 04:47:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:51,331 INFO L93 Difference]: Finished difference Result 296 states and 342 transitions. [2020-11-07 04:47:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 04:47:51,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-11-07 04:47:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:51,340 INFO L225 Difference]: With dead ends: 296 [2020-11-07 04:47:51,340 INFO L226 Difference]: Without dead ends: 236 [2020-11-07 04:47:51,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-11-07 04:47:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-07 04:47:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-11-07 04:47:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-11-07 04:47:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 225 transitions. [2020-11-07 04:47:51,405 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 225 transitions. Word has length 94 [2020-11-07 04:47:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:51,406 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 225 transitions. [2020-11-07 04:47:51,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 04:47:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 225 transitions. [2020-11-07 04:47:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-07 04:47:51,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:51,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:47:51,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:47:51,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:51,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:51,411 INFO L82 PathProgramCache]: Analyzing trace with hash 972202118, now seen corresponding path program 1 times [2020-11-07 04:47:51,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:51,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600306089] [2020-11-07 04:47:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:51,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:51,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 04:47:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 04:47:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:51,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-11-07 04:47:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-07 04:47:51,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600306089] [2020-11-07 04:47:51,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:47:51,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 04:47:51,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062671009] [2020-11-07 04:47:51,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 04:47:51,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:51,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 04:47:51,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-07 04:47:51,675 INFO L87 Difference]: Start difference. First operand 195 states and 225 transitions. Second operand 11 states. [2020-11-07 04:47:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:53,176 INFO L93 Difference]: Finished difference Result 293 states and 335 transitions. [2020-11-07 04:47:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 04:47:53,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-11-07 04:47:53,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:53,183 INFO L225 Difference]: With dead ends: 293 [2020-11-07 04:47:53,184 INFO L226 Difference]: Without dead ends: 208 [2020-11-07 04:47:53,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-11-07 04:47:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-07 04:47:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 172. [2020-11-07 04:47:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-07 04:47:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2020-11-07 04:47:53,255 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 97 [2020-11-07 04:47:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:53,255 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2020-11-07 04:47:53,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 04:47:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2020-11-07 04:47:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-07 04:47:53,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:53,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:47:53,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 04:47:53,266 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:53,266 INFO L82 PathProgramCache]: Analyzing trace with hash -388540522, now seen corresponding path program 2 times [2020-11-07 04:47:53,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:53,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186692699] [2020-11-07 04:47:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 04:47:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 04:47:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 04:47:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-07 04:47:53,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186692699] [2020-11-07 04:47:53,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:53,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 04:47:53,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776651505] [2020-11-07 04:47:53,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 04:47:53,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:53,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 04:47:53,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-11-07 04:47:53,937 INFO L87 Difference]: Start difference. First operand 172 states and 195 transitions. Second operand 16 states. [2020-11-07 04:47:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:56,957 INFO L93 Difference]: Finished difference Result 316 states and 373 transitions. [2020-11-07 04:47:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 04:47:56,957 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 98 [2020-11-07 04:47:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:56,965 INFO L225 Difference]: With dead ends: 316 [2020-11-07 04:47:56,965 INFO L226 Difference]: Without dead ends: 256 [2020-11-07 04:47:56,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2020-11-07 04:47:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-11-07 04:47:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 226. [2020-11-07 04:47:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-07 04:47:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 262 transitions. [2020-11-07 04:47:57,044 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 262 transitions. Word has length 98 [2020-11-07 04:47:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:57,046 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 262 transitions. [2020-11-07 04:47:57,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 04:47:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 262 transitions. [2020-11-07 04:47:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-07 04:47:57,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:57,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:47:57,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 04:47:57,051 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:57,052 INFO L82 PathProgramCache]: Analyzing trace with hash 295208225, now seen corresponding path program 1 times [2020-11-07 04:47:57,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:57,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796833372] [2020-11-07 04:47:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:57,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:57,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:57,196 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:47:57,196 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:47:57,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 04:47:57,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:47:57 BoogieIcfgContainer [2020-11-07 04:47:57,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:47:57,276 INFO L168 Benchmark]: Toolchain (without parser) took 12067.38 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 130.4 MB in the beginning and 134.2 MB in the end (delta: -3.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:57,277 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 95.7 MB in the beginning and 95.6 MB in the end (delta: 167.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:47:57,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.10 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 117.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:57,279 INFO L168 Benchmark]: Boogie Preprocessor took 61.73 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 115.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:57,280 INFO L168 Benchmark]: RCFGBuilder took 811.31 ms. Allocated memory is still 155.2 MB. Free memory was 115.8 MB in the beginning and 115.0 MB in the end (delta: 792.9 kB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:57,281 INFO L168 Benchmark]: TraceAbstraction took 10768.93 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 114.5 MB in the beginning and 134.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:57,285 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 125.8 MB. Free memory was 95.7 MB in the beginning and 95.6 MB in the end (delta: 167.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 405.10 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 117.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.73 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 115.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 811.31 ms. Allocated memory is still 155.2 MB. Free memory was 115.8 MB in the beginning and 115.0 MB in the end (delta: 792.9 kB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10768.93 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 114.5 MB in the beginning and 134.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 105, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=33554432, ma=33554432] [L220] signed char ea = __VERIFIER_nondet_char(); VAL [__VERIFIER_nondet_char()=127, ea=127, ma=33554432] [L221] unsigned int b ; VAL [ea=127, ma=33554432] [L222] unsigned int mb = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=16777216, ea=127, ma=33554432, mb=16777216] [L223] signed char eb = __VERIFIER_nondet_char(); VAL [__VERIFIER_nondet_char()=0, ea=127, eb=0, ma=33554432, mb=16777216] [L224] unsigned int r_add1 ; VAL [ea=127, eb=0, ma=33554432, mb=16777216] [L225] unsigned int r_add2 ; VAL [ea=127, eb=0, ma=33554432, mb=16777216] [L226] unsigned int zero ; VAL [ea=127, eb=0, ma=33554432, mb=16777216] [L227] int tmp ; VAL [ea=127, eb=0, ma=33554432, mb=16777216] [L228] int tmp___0 ; VAL [ea=127, eb=0, ma=33554432, mb=16777216] [L229] int __retres14 ; VAL [ea=127, eb=0, ma=33554432, mb=16777216] [L233] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L17] unsigned int res ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L18] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L21] COND TRUE ! m VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L22] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L72] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L233] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0, ma=33554432, mb=16777216] [L233] zero = base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L234] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L17] unsigned int res ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L18] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L21] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L27] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L49] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L51] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L56] COND TRUE e >= 127 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L57] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L72] return (__retres4); VAL [\old(e)=127, \old(m)=33554432, \result=4294967295, __retres4=4294967295, e=127, m=33554432] [L234] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L234] a = base2flt(ma, ea) VAL [a=4294967295, base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L235] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L17] unsigned int res ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L18] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L21] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L27] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L49] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L51] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L68] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L69] res = m | ((unsigned int )(e + 128) << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L70] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=4294967295, e=0, res=4294967295] [L72] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-36028797018963969, __retres4=4294967295, e=0, res=4294967295] [L235] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=-36028797018963969, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L235] b = base2flt(mb, eb) VAL [a=4294967295, b=4294967295, base2flt(mb, eb)=-36028797018963969, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L236] CALL addflt(a, b) VAL [\old(a)=4294967295, \old(b)=4294967295] [L76] unsigned int res ; VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L77] unsigned int ma ; VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L78] unsigned int mb ; VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L79] unsigned int delta ; VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L80] int ea ; VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L81] int eb ; VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L82] unsigned int tmp ; VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L83] unsigned int __retres10 ; VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L86] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L93] COND FALSE !(! b) VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L100] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295] [L101] ea = (int )(a >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295, ea=127] [L102] ma = ma | (1U << 24U) VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295, ea=127] [L103] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295, ea=127] [L104] eb = (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295, ea=127, eb=2147483519] [L105] mb = mb | (1U << 24U) VAL [\old(a)=4294967295, \old(b)=4294967295, a=4294967295, b=4294967295, ea=127, eb=2147483519] [L106] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] CALL reach_error() [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 181 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 614 SDtfs, 902 SDslu, 814 SDs, 0 SdLazy, 4999 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 119 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 478 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 94560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 100/106 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...