/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 NUM_VARIABLES --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-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:27:30,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:27:30,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:27:30,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:27:30,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:27:30,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:27:30,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:27:30,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:27:30,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:27:30,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:27:30,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:27:30,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:27:30,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:27:30,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:27:30,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:27:30,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:27:30,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:27:30,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:27:30,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:27:30,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:27:30,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:27:30,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:27:30,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:27:30,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:27:30,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:27:30,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:27:30,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:27:30,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:27:30,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:27:30,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-20 16:27:30,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:27:30,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:27:30,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:27:30,896 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 [2020-07-20 16:27:30,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:27:30,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:27:30,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:27:30,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:27:30,912 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:27:30,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:27:30,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:27:30,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:27:30,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:27:30,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:27:30,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:27:30,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:27:30,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:27:30,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:27:30,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:27:30,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:27:30,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:27:30,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:27:30,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:27:30,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:27:30,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:27:30,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:27:30,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:27:30,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:27:30,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:27:30,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:27:30,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:30,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:27:30,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:27:30,917 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 -> NUM_VARIABLES 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 [2020-07-20 16:27:31,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:27:31,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:27:31,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:27:31,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:27:31,224 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:27:31,225 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-20 16:27:31,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0bef3e7b/8defae74434947899a0aa6b68db00457/FLAGe9fbbbce9 [2020-07-20 16:27:31,785 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:27:31,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-20 16:27:31,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0bef3e7b/8defae74434947899a0aa6b68db00457/FLAGe9fbbbce9 [2020-07-20 16:27:32,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0bef3e7b/8defae74434947899a0aa6b68db00457 [2020-07-20 16:27:32,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:27:32,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:27:32,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:32,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:27:32,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:27:32,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fb56e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32, skipping insertion in model container [2020-07-20 16:27:32,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:27:32,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:27:32,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:32,431 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:27:32,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:32,614 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:27:32,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32 WrapperNode [2020-07-20 16:27:32,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:32,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:27:32,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:27:32,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:27:32,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (1/1) ... [2020-07-20 16:27:32,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:27:32,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:27:32,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:27:32,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:27:32,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (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 [2020-07-20 16:27:32,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:27:32,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:27:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 16:27:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 16:27:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-20 16:27:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:27:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:27:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 16:27:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 16:27:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 16:27:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:27:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 16:27:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:27:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:27:32,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 16:27:32,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:27:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-20 16:27:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:27:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:27:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 16:27:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:27:33,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:27:33,341 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 16:27:33,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:33 BoogieIcfgContainer [2020-07-20 16:27:33,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:27:33,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:27:33,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:27:33,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:27:33,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:32" (1/3) ... [2020-07-20 16:27:33,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a85f298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:33, skipping insertion in model container [2020-07-20 16:27:33,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:32" (2/3) ... [2020-07-20 16:27:33,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a85f298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:33, skipping insertion in model container [2020-07-20 16:27:33,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:33" (3/3) ... [2020-07-20 16:27:33,360 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-20 16:27:33,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:27:33,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:27:33,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:27:33,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:27:33,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:27:33,436 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:27:33,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:27:33,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:27:33,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:27:33,437 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:27:33,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:27:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-20 16:27:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 16:27:33,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:33,468 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] [2020-07-20 16:27:33,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-20 16:27:33,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:33,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666749187] [2020-07-20 16:27:33,482 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 [2020-07-20 16:27:33,600 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:27:33,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:27:33,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:27:33,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:27:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:27:33,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:27:33,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666749187] [2020-07-20 16:27:33,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:27:33,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:27:33,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259190176] [2020-07-20 16:27:33,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:27:33,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:27:33,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:27:33,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:27:33,659 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-20 16:27:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:27:33,689 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-20 16:27:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:27:33,690 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 16:27:33,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:27:33,701 INFO L225 Difference]: With dead ends: 138 [2020-07-20 16:27:33,702 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 16:27:33,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:27:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 16:27:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 16:27:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 16:27:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-20 16:27:33,755 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-20 16:27:33,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:27:33,755 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-20 16:27:33,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:27:33,756 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-20 16:27:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 16:27:33,757 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:33,757 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] [2020-07-20 16:27:33,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:33,971 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:33,973 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-20 16:27:33,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:33,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251250867] [2020-07-20 16:27:33,974 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 [2020-07-20 16:27:34,120 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:27:34,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:27:34,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:27:34,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:34,240 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:27:34,240 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:27:34,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:34,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:34 BoogieIcfgContainer [2020-07-20 16:27:34,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:27:34,490 INFO L168 Benchmark]: Toolchain (without parser) took 2346.55 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 101.5 MB in the beginning and 196.2 MB in the end (delta: -94.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 16:27:34,491 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 16:27:34,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.76 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.3 MB in the beginning and 176.8 MB in the end (delta: -75.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:34,493 INFO L168 Benchmark]: Boogie Preprocessor took 73.29 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 174.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:34,493 INFO L168 Benchmark]: RCFGBuilder took 659.56 ms. Allocated memory is still 201.9 MB. Free memory was 174.0 MB in the beginning and 137.2 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:34,494 INFO L168 Benchmark]: TraceAbstraction took 1136.45 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 137.2 MB in the beginning and 196.2 MB in the end (delta: -59.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 16:27:34,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 469.76 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.3 MB in the beginning and 176.8 MB in the end (delta: -75.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.29 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 174.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 659.56 ms. Allocated memory is still 201.9 MB. Free memory was 174.0 MB in the beginning and 137.2 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1136.45 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 137.2 MB in the beginning and 196.2 MB in the end (delta: -59.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={4:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={4:0}] [L164] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={4:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=2147483647, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=4, one_fmod=1, Zero_fmod={4:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=4, one_fmod=1, x=3, y=4, Zero_fmod={4:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=4, lx=17, ly=20, one_fmod=1, sx=2240, x=3, y=4, Zero_fmod={4:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=4, hx=0, lx=17, ly=20, one_fmod=1, sx=2240, x=3, y=4, Zero_fmod={4:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=7, one_fmod=1, x=3, y=4, Zero_fmod={4:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={4:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 102 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...