/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_FUNCTIONS --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-acceleration/multivar_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:20:25,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:20:25,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:20:25,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:20:25,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:20:25,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:20:25,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:20:25,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:20:25,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:20:25,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:20:25,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:20:25,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:20:25,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:20:25,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:20:25,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:20:25,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:20:25,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:20:25,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:20:25,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:20:25,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:20:25,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:20:25,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:20:25,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:20:25,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:20:25,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 14:20:25,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 14:20:25,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 14:20:25,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 14:20:25,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 14:20:25,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 14:20:25,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 14:20:25,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 14:20:25,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 14:20:25,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 14:20:25,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 14:20:25,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 14:20:25,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 14:20:25,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 14:20:25,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:20:25,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:20:25,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:20:25,363 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 14:20:25,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:20:25,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:20:25,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:20:25,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:20:25,385 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:20:25,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:20:25,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:20:25,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:20:25,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:20:25,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:20:25,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:20:25,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:20:25,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:20:25,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:20:25,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:20:25,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:20:25,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:20:25,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:20:25,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:20:25,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:20:25,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:20:25,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:20:25,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:20:25,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:20:25,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:20:25,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:20:25,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:25,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:20:25,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:20:25,390 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_FUNCTIONS 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 14:20:25,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:20:25,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:20:25,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:20:25,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:20:25,737 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:20:25,739 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-07-20 14:20:25,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745576390/c20a1e7ac3434366a0cdd96c991804a2/FLAGf33860cac [2020-07-20 14:20:26,532 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:20:26,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-07-20 14:20:26,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745576390/c20a1e7ac3434366a0cdd96c991804a2/FLAGf33860cac [2020-07-20 14:20:26,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745576390/c20a1e7ac3434366a0cdd96c991804a2 [2020-07-20 14:20:26,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:20:26,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:20:26,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:20:26,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:20:26,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:20:26,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:20:26" (1/1) ... [2020-07-20 14:20:26,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33763711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:26, skipping insertion in model container [2020-07-20 14:20:26,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:20:26" (1/1) ... [2020-07-20 14:20:26,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:20:26,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:20:27,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:20:27,154 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:20:27,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:20:27,194 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:20:27,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27 WrapperNode [2020-07-20 14:20:27,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:20:27,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:20:27,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:20:27,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:20:27,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (1/1) ... [2020-07-20 14:20:27,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (1/1) ... [2020-07-20 14:20:27,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (1/1) ... [2020-07-20 14:20:27,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (1/1) ... [2020-07-20 14:20:27,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (1/1) ... [2020-07-20 14:20:27,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (1/1) ... [2020-07-20 14:20:27,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (1/1) ... [2020-07-20 14:20:27,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:20:27,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:20:27,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:20:27,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:20:27,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (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 14:20:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:20:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:20:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:20:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:20:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:20:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-20 14:20:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:20:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:20:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:20:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:20:27,663 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:20:27,663 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:20:27,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:20:27 BoogieIcfgContainer [2020-07-20 14:20:27,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:20:27,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:20:27,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:20:27,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:20:27,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:20:26" (1/3) ... [2020-07-20 14:20:27,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b806a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:20:27, skipping insertion in model container [2020-07-20 14:20:27,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:27" (2/3) ... [2020-07-20 14:20:27,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b806a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:20:27, skipping insertion in model container [2020-07-20 14:20:27,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:20:27" (3/3) ... [2020-07-20 14:20:27,681 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-07-20 14:20:27,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:20:27,704 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:20:27,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:20:27,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:20:27,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:20:27,750 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:20:27,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:20:27,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:20:27,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:20:27,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:20:27,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:20:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 14:20:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 14:20:27,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:20:27,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:20:27,781 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:20:27,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:20:27,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-07-20 14:20:27,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:20:27,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717099355] [2020-07-20 14:20:27,797 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 14:20:27,871 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:20:27,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:20:27,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 14:20:27,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:20:27,964 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:20:28,038 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 14:20:28,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:20:28,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717099355] [2020-07-20 14:20:28,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:20:28,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:20:28,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225857630] [2020-07-20 14:20:28,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:20:28,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:20:28,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:20:28,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:20:28,085 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-20 14:20:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:20:28,189 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-07-20 14:20:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:20:28,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-20 14:20:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:20:28,202 INFO L225 Difference]: With dead ends: 26 [2020-07-20 14:20:28,202 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:20:28,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:20:28,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:20:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:20:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:20:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:20:28,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-20 14:20:28,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:20:28,248 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:20:28,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:20:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:20:28,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:20:28,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:28,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:20:28,549 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 14:20:28,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:20:28,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:20:28,550 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:20:28,550 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:20:28,551 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:20:28,551 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2020-07-20 14:20:28,551 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2020-07-20 14:20:28,551 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-07-20 14:20:28,552 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2020-07-20 14:20:28,552 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 18) the Hoare annotation is: (and (<= 1024 (mod main_~x~0 4294967296)) (= main_~y~0 main_~x~0)) [2020-07-20 14:20:28,553 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-07-20 14:20:28,553 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-07-20 14:20:28,553 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-20 14:20:28,553 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-20 14:20:28,554 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-20 14:20:28,554 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-07-20 14:20:28,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:20:28 BoogieIcfgContainer [2020-07-20 14:20:28,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:20:28,583 INFO L168 Benchmark]: Toolchain (without parser) took 1691.03 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 134.6 MB in the end (delta: -33.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:28,585 INFO L168 Benchmark]: CDTParser took 1.20 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 14:20:28,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.60 ms. Allocated memory is still 143.1 MB. Free memory was 101.0 MB in the beginning and 91.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:28,587 INFO L168 Benchmark]: Boogie Preprocessor took 45.59 ms. Allocated memory is still 143.1 MB. Free memory was 91.7 MB in the beginning and 90.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:28,589 INFO L168 Benchmark]: RCFGBuilder took 425.53 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 90.3 MB in the beginning and 167.8 MB in the end (delta: -77.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:28,590 INFO L168 Benchmark]: TraceAbstraction took 908.96 ms. Allocated memory is still 200.3 MB. Free memory was 167.1 MB in the beginning and 134.6 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:28,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.60 ms. Allocated memory is still 143.1 MB. Free memory was 101.0 MB in the beginning and 91.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.59 ms. Allocated memory is still 143.1 MB. Free memory was 91.7 MB in the beginning and 90.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.53 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 90.3 MB in the beginning and 167.8 MB in the end (delta: -77.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 908.96 ms. Allocated memory is still 200.3 MB. Free memory was 167.1 MB in the beginning and 134.6 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 15]: Loop Invariant Derived loop invariant: y == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 25 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 17 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 207 SizeOfPredicates, 2 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 8 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 proved your program to be correct! Received shutdown request...