/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:01:40,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:01:40,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:01:40,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:01:40,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:01:40,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:01:40,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:01:40,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:01:40,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:01:40,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:01:40,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:01:40,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:01:40,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:01:40,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:01:40,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:01:40,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:01:40,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:01:40,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:01:40,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:01:40,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:01:40,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:01:40,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:01:40,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:01:40,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:01:41,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:01:41,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:01:41,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:01:41,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:01:41,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:01:41,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:01:41,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:01:41,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:01:41,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:01:41,026 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:01:41,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:01:41,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:01:41,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:01:41,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:01:41,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:01:41,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:01:41,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:01:41,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:01:41,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:01:41,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:01:41,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:01:41,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:01:41,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:01:41,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:01:41,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:01:41,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:01:41,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:01:41,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:01:41,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:01:41,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:01:41,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:01:41,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:41,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:01:41,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:01:41,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:01:41,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:01:41,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:01:41,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:01:41,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:01:41,343 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:01:41,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-07-21 22:01:41,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6de220646/3b5f8525d6964de8a09d3bb2d0d6af3c/FLAG7a3b3da4c [2020-07-21 22:01:41,902 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:01:41,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-07-21 22:01:41,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6de220646/3b5f8525d6964de8a09d3bb2d0d6af3c/FLAG7a3b3da4c [2020-07-21 22:01:42,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6de220646/3b5f8525d6964de8a09d3bb2d0d6af3c [2020-07-21 22:01:42,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:01:42,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:01:42,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:01:42,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:01:42,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:01:42,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793dd372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42, skipping insertion in model container [2020-07-21 22:01:42,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:01:42,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:01:42,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:01:42,577 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:01:42,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:01:42,704 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:01:42,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42 WrapperNode [2020-07-21 22:01:42,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:01:42,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:01:42,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:01:42,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:01:42,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (1/1) ... [2020-07-21 22:01:42,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:01:42,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:01:42,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:01:42,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:01:42,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (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 [2020-07-21 22:01:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:01:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:01:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 22:01:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 22:01:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-07-21 22:01:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:01:42,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:01:42,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:01:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 22:01:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 22:01:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 22:01:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-07-21 22:01:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:01:42,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:01:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:01:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 22:01:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:01:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:01:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:01:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:01:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 22:01:43,048 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:01:43,049 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 22:01:43,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:01:43 BoogieIcfgContainer [2020-07-21 22:01:43,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:01:43,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:01:43,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:01:43,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:01:43,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:01:42" (1/3) ... [2020-07-21 22:01:43,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778fa048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:01:43, skipping insertion in model container [2020-07-21 22:01:43,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:42" (2/3) ... [2020-07-21 22:01:43,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778fa048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:01:43, skipping insertion in model container [2020-07-21 22:01:43,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:01:43" (3/3) ... [2020-07-21 22:01:43,061 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-07-21 22:01:43,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:01:43,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:01:43,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:01:43,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:01:43,126 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:01:43,126 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:01:43,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:01:43,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:01:43,127 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:01:43,127 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:01:43,127 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:01:43,148 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-21 22:01:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 22:01:43,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:01:43,156 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] [2020-07-21 22:01:43,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:01:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:01:43,164 INFO L82 PathProgramCache]: Analyzing trace with hash -78739841, now seen corresponding path program 1 times [2020-07-21 22:01:43,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:01:43,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704520018] [2020-07-21 22:01:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:43,282 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:01:43,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:01:43,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:01:43,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:01:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:01:43,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:01:43,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704520018] [2020-07-21 22:01:43,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:01:43,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:01:43,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413917031] [2020-07-21 22:01:43,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:01:43,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:01:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:01:43,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:01:43,346 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-07-21 22:01:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:01:43,366 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-07-21 22:01:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:01:43,368 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2020-07-21 22:01:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:01:43,377 INFO L225 Difference]: With dead ends: 47 [2020-07-21 22:01:43,377 INFO L226 Difference]: Without dead ends: 21 [2020-07-21 22:01:43,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:01:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-21 22:01:43,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-21 22:01:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-21 22:01:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-07-21 22:01:43,422 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 20 [2020-07-21 22:01:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:01:43,422 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-07-21 22:01:43,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:01:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-07-21 22:01:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 22:01:43,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:01:43,424 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] [2020-07-21 22:01:43,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:43,639 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:01:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:01:43,640 INFO L82 PathProgramCache]: Analyzing trace with hash 179425597, now seen corresponding path program 1 times [2020-07-21 22:01:43,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:01:43,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302073043] [2020-07-21 22:01:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:43,755 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:01:43,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:01:43,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:01:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:01:43,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:01:43,800 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:01:43,801 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:01:44,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:44,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:01:44 BoogieIcfgContainer [2020-07-21 22:01:44,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:01:44,047 INFO L168 Benchmark]: Toolchain (without parser) took 1747.27 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 119.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:44,049 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 135.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 22:01:44,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.71 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 100.3 MB in the beginning and 177.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:44,051 INFO L168 Benchmark]: Boogie Preprocessor took 38.56 ms. Allocated memory is still 199.2 MB. Free memory was 177.6 MB in the beginning and 175.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:44,052 INFO L168 Benchmark]: RCFGBuilder took 307.82 ms. Allocated memory is still 199.2 MB. Free memory was 175.8 MB in the beginning and 159.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:44,053 INFO L168 Benchmark]: TraceAbstraction took 990.32 ms. Allocated memory is still 199.2 MB. Free memory was 158.7 MB in the beginning and 119.9 MB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:44,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 135.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.71 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 100.3 MB in the beginning and 177.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.56 ms. Allocated memory is still 199.2 MB. Free memory was 177.6 MB in the beginning and 175.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.82 ms. Allocated memory is still 199.2 MB. Free memory was 175.8 MB in the beginning and 159.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 990.32 ms. Allocated memory is still 199.2 MB. Free memory was 158.7 MB in the beginning and 119.9 MB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 37, overapproximation of someBinaryArithmeticDOUBLEoperation at line 25, overapproximation of bitwiseXor at line 24. Possible FailurePath: [L30] int a; [L31] double r; [L33] a = __VERIFIER_nondet_int() [L34] CALL assume_abort_if_not(a >= -10000 && a <= 10000) VAL [\old(cond)=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L34] RET assume_abort_if_not(a >= -10000 && a <= 10000) VAL [a=0] [L36] CALL, EXPR cast(a) VAL [\old(i)=0] [L20] union u x, y; [L21] x.i[0] = 0x43300000 [L22] EXPR x.i[0] [L22] y.i[0] = x.i[0] [L23] x.i[1] = 0x80000000 [L24] EXPR x.i[1] [L24] y.i[1] = i ^ x.i[1] [L25] EXPR y.d [L25] EXPR x.d [L25] return y.d - x.d; [L25] return y.d - x.d; [L25] return y.d - x.d; VAL [\old(i)=0, i=0] [L36] RET, EXPR cast(a) VAL [a=0, cast(a)=11] [L36] r = cast(a) [L37] CALL __VERIFIER_assert(r >= -10000. && r <= 10000.) VAL [\old(cond)=0] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...