/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/loop-crafted/simple_vardep_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:16:05,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:16:05,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:16:05,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:16:05,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:16:05,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:16:05,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:16:05,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:16:05,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:16:05,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:16:05,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:16:05,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:16:05,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:16:05,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:16:05,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:16:05,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:16:05,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:16:05,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:16:05,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:16:05,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:16:05,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:16:05,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:16:05,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:16:05,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:16:05,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 23:16:05,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 23:16:05,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 23:16:05,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 23:16:05,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 23:16:05,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 23:16:05,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 23:16:05,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 23:16:05,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 23:16:05,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 23:16:05,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 23:16:05,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 23:16:05,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 23:16:05,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 23:16:05,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:16:05,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:16:05,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:16:05,250 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 23:16:05,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:16:05,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:16:05,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:16:05,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:16:05,271 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:16:05,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:16:05,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:16:05,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:16:05,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:16:05,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:16:05,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:16:05,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:16:05,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:16:05,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:16:05,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:16:05,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:16:05,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:16:05,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:16:05,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:16:05,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:16:05,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:16:05,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:16:05,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:16:05,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:16:05,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:16:05,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:16:05,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:16:05,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:16:05,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:16:05,276 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 23:16:05,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:16:05,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:16:05,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:16:05,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:16:05,634 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:16:05,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-07-21 23:16:05,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c585f1e/c4bd65de55ef48e8b603bec48f9071c0/FLAG79db1e7a6 [2020-07-21 23:16:06,392 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:16:06,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-07-21 23:16:06,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c585f1e/c4bd65de55ef48e8b603bec48f9071c0/FLAG79db1e7a6 [2020-07-21 23:16:06,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c585f1e/c4bd65de55ef48e8b603bec48f9071c0 [2020-07-21 23:16:06,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:16:06,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:16:06,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:16:06,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:16:06,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:16:06,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:16:06" (1/1) ... [2020-07-21 23:16:06,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c487c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:06, skipping insertion in model container [2020-07-21 23:16:06,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:16:06" (1/1) ... [2020-07-21 23:16:06,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:16:06,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:16:07,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:16:07,009 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:16:07,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:16:07,049 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:16:07,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07 WrapperNode [2020-07-21 23:16:07,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:16:07,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:16:07,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:16:07,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:16:07,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (1/1) ... [2020-07-21 23:16:07,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (1/1) ... [2020-07-21 23:16:07,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (1/1) ... [2020-07-21 23:16:07,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (1/1) ... [2020-07-21 23:16:07,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (1/1) ... [2020-07-21 23:16:07,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (1/1) ... [2020-07-21 23:16:07,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (1/1) ... [2020-07-21 23:16:07,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:16:07,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:16:07,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:16:07,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:16:07,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (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 23:16:07,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:16:07,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:16:07,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 23:16:07,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:16:07,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:16:07,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:16:07,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:16:07,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:16:07,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:16:07,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:16:07,483 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 23:16:07,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:16:07 BoogieIcfgContainer [2020-07-21 23:16:07,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:16:07,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:16:07,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:16:07,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:16:07,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:16:06" (1/3) ... [2020-07-21 23:16:07,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d019d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:16:07, skipping insertion in model container [2020-07-21 23:16:07,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:16:07" (2/3) ... [2020-07-21 23:16:07,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d019d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:16:07, skipping insertion in model container [2020-07-21 23:16:07,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:16:07" (3/3) ... [2020-07-21 23:16:07,499 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2020-07-21 23:16:07,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:16:07,519 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:16:07,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:16:07,565 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:16:07,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:16:07,566 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:16:07,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:16:07,566 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:16:07,567 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:16:07,567 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:16:07,567 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:16:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-21 23:16:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 23:16:07,594 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:16:07,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:16:07,596 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:16:07,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:16:07,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-07-21 23:16:07,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:16:07,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101283697] [2020-07-21 23:16:07,613 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 23:16:07,695 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:16:07,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:16:07,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 23:16:07,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:16:07,937 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 23:16:07,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:16:07,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101283697] [2020-07-21 23:16:07,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:16:07,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 23:16:07,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585257728] [2020-07-21 23:16:07,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:16:07,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:16:07,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:16:07,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:16:07,965 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-21 23:16:08,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:16:08,110 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-07-21 23:16:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:16:08,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-21 23:16:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:16:08,124 INFO L225 Difference]: With dead ends: 36 [2020-07-21 23:16:08,125 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 23:16:08,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:16:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 23:16:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-21 23:16:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 23:16:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-21 23:16:08,182 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-07-21 23:16:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:16:08,182 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-21 23:16:08,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:16:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-21 23:16:08,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 23:16:08,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:16:08,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:16:08,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:16:08,396 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:16:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:16:08,397 INFO L82 PathProgramCache]: Analyzing trace with hash 982254813, now seen corresponding path program 1 times [2020-07-21 23:16:08,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:16:08,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082489250] [2020-07-21 23:16:08,399 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 23:16:08,449 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:16:08,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:16:08,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 23:16:08,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:16:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:16:08,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:16:08,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:16:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:16:08,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082489250] [2020-07-21 23:16:08,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 23:16:08,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2020-07-21 23:16:08,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546079050] [2020-07-21 23:16:08,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:16:08,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:16:08,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:16:08,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-21 23:16:08,889 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-07-21 23:16:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:16:08,933 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-21 23:16:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:16:08,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-21 23:16:08,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:16:08,935 INFO L225 Difference]: With dead ends: 19 [2020-07-21 23:16:08,936 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:16:08,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:16:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:16:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:16:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:16:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:16:08,939 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-07-21 23:16:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:16:08,940 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:16:08,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:16:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:16:08,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:16:09,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:16:09,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:16:09,251 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 23:16:09,252 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:16:09,252 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:16:09,252 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 23:16:09,252 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:16:09,252 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:16:09,253 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-07-21 23:16:09,253 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-07-21 23:16:09,253 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (= (mod (+ main_~j~0 main_~i~0) 4294967296) (mod main_~k~0 4294967296)) [2020-07-21 23:16:09,254 INFO L264 CegarLoopResult]: At program point L24-1(lines 19 25) the Hoare annotation is: (= (mod (+ main_~j~0 main_~i~0) 4294967296) (mod main_~k~0 4294967296)) [2020-07-21 23:16:09,254 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 27) no Hoare annotation was computed. [2020-07-21 23:16:09,254 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-07-21 23:16:09,254 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2020-07-21 23:16:09,254 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 23:16:09,255 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 23:16:09,255 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed. [2020-07-21 23:16:09,255 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 23:16:09,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:16:09 BoogieIcfgContainer [2020-07-21 23:16:09,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:16:09,287 INFO L168 Benchmark]: Toolchain (without parser) took 2540.73 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 102.6 MB in the beginning and 104.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:16:09,288 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 144.2 MB. Free memory is still 120.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 23:16:09,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.03 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:16:09,290 INFO L168 Benchmark]: Boogie Preprocessor took 36.15 ms. Allocated memory is still 144.2 MB. Free memory was 92.7 MB in the beginning and 91.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-21 23:16:09,292 INFO L168 Benchmark]: RCFGBuilder took 399.90 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 168.7 MB in the end (delta: -77.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-21 23:16:09,293 INFO L168 Benchmark]: TraceAbstraction took 1793.69 ms. Allocated memory is still 200.8 MB. Free memory was 167.7 MB in the beginning and 104.7 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:16:09,298 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 144.2 MB. Free memory is still 120.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.03 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.15 ms. Allocated memory is still 144.2 MB. Free memory was 92.7 MB in the beginning and 91.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.90 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 168.7 MB in the end (delta: -77.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1793.69 ms. Allocated memory is still 200.8 MB. Free memory was 167.7 MB in the beginning and 104.7 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (j + i) % 4294967296 == k % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 10 SDslu, 68 SDs, 0 SdLazy, 37 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 23 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 26 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 1869 SizeOfPredicates, 4 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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 proved your program to be correct! Received shutdown request...