/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:01:47,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:01:47,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:01:47,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:01:47,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:01:47,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:01:47,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:01:47,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:01:47,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:01:47,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:01:47,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:01:47,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:01:47,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:01:47,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:01:47,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:01:47,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:01:47,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:01:47,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:01:47,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:01:47,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:01:47,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:01:47,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:01:47,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:01:47,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:01:47,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 22:01:47,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:01:47,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:01:47,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:01:47,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:01:47,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:01:47,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:01:47,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:01:47,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:01:47,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:01:47,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:01:47,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:01:47,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:01:47,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:01:47,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:01:47,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:01:47,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:01:47,437 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:01:47,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:01:47,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:01:47,438 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:01:47,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:01:47,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:01:47,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:01:47,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:01:47,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:01:47,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:01:47,439 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:01:47,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:01:47,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:01:47,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:01:47,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:01:47,846 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:01:47,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-10-23 22:01:47,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba998475c/0919a98ec43e4fdd840187b6f7c54d79/FLAGf654819b2 [2020-10-23 22:01:48,575 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:01:48,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-10-23 22:01:48,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba998475c/0919a98ec43e4fdd840187b6f7c54d79/FLAGf654819b2 [2020-10-23 22:01:48,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba998475c/0919a98ec43e4fdd840187b6f7c54d79 [2020-10-23 22:01:48,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:01:48,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:01:48,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:48,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:01:48,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:01:48,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:48" (1/1) ... [2020-10-23 22:01:48,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735c9605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:48, skipping insertion in model container [2020-10-23 22:01:48,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:48" (1/1) ... [2020-10-23 22:01:48,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:01:49,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:01:49,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:49,273 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:01:49,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:49,331 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:01:49,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49 WrapperNode [2020-10-23 22:01:49,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:49,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:01:49,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:01:49,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:01:49,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (1/1) ... [2020-10-23 22:01:49,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (1/1) ... [2020-10-23 22:01:49,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (1/1) ... [2020-10-23 22:01:49,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (1/1) ... [2020-10-23 22:01:49,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (1/1) ... [2020-10-23 22:01:49,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (1/1) ... [2020-10-23 22:01:49,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (1/1) ... [2020-10-23 22:01:49,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:01:49,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:01:49,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:01:49,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:01:49,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (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 [2020-10-23 22:01:49,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:01:49,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:01:49,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:01:49,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:01:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:01:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:01:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:01:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:01:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:01:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:01:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:01:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:01:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:01:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:01:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:01:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:01:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:01:49,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:01:49,917 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 22:01:49,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:49 BoogieIcfgContainer [2020-10-23 22:01:49,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:01:49,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:01:49,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:01:49,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:01:49,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:01:48" (1/3) ... [2020-10-23 22:01:49,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335f8b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:49, skipping insertion in model container [2020-10-23 22:01:49,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:49" (2/3) ... [2020-10-23 22:01:49,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335f8b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:49, skipping insertion in model container [2020-10-23 22:01:49,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:49" (3/3) ... [2020-10-23 22:01:49,928 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2020-10-23 22:01:49,939 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:01:49,944 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:01:49,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:01:49,997 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:01:49,997 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:01:49,997 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:01:49,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:01:49,997 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:01:49,998 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:01:49,998 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:01:49,998 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:01:50,014 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-23 22:01:50,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 22:01:50,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:50,024 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, 1] [2020-10-23 22:01:50,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:50,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:50,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1170389226, now seen corresponding path program 1 times [2020-10-23 22:01:50,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:50,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397247181] [2020-10-23 22:01:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:50,119 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:50,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:50,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397247181] [2020-10-23 22:01:50,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:50,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:01:50,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958799871] [2020-10-23 22:01:50,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:01:50,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:50,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:01:50,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:01:50,420 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-23 22:01:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:50,760 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2020-10-23 22:01:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:01:50,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-23 22:01:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:50,772 INFO L225 Difference]: With dead ends: 95 [2020-10-23 22:01:50,772 INFO L226 Difference]: Without dead ends: 65 [2020-10-23 22:01:50,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:01:50,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-23 22:01:50,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2020-10-23 22:01:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 22:01:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-23 22:01:50,833 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 29 [2020-10-23 22:01:50,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:50,834 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-23 22:01:50,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:01:50,834 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-23 22:01:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 22:01:50,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:50,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:50,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:01:50,837 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:50,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:50,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1432420508, now seen corresponding path program 1 times [2020-10-23 22:01:50,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:50,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095355814] [2020-10-23 22:01:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:51,060 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-23 22:01:51,864 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 798 DAG size of output: 46 [2020-10-23 22:01:52,038 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-23 22:01:52,375 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-23 22:01:52,385 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:52,395 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:52,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:52,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095355814] [2020-10-23 22:01:52,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:52,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:01:52,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095296965] [2020-10-23 22:01:52,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:01:52,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:52,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:01:52,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:01:52,849 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 7 states. [2020-10-23 22:01:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:57,912 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-23 22:01:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 22:01:57,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-23 22:01:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:57,915 INFO L225 Difference]: With dead ends: 104 [2020-10-23 22:01:57,915 INFO L226 Difference]: Without dead ends: 64 [2020-10-23 22:01:57,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:01:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-23 22:01:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-23 22:01:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-23 22:01:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-23 22:01:57,938 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 37 [2020-10-23 22:01:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:57,938 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-23 22:01:57,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:01:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-23 22:01:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-23 22:01:57,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:57,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:57,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:01:57,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:57,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1008398220, now seen corresponding path program 1 times [2020-10-23 22:01:57,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:57,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67392698] [2020-10-23 22:01:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:58,230 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-23 22:01:58,419 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-23 22:01:59,136 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 799 DAG size of output: 47 [2020-10-23 22:01:59,323 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-10-23 22:01:59,955 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 800 DAG size of output: 48 [2020-10-23 22:01:59,956 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:59,958 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:02:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:00,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:02:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:02:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:02:00,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67392698] [2020-10-23 22:02:00,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:02:00,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:02:00,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648221927] [2020-10-23 22:02:00,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:02:00,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:02:00,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:02:00,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:02:00,301 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-10-23 22:02:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:02:07,101 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-23 22:02:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 22:02:07,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-23 22:02:07,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:02:07,107 INFO L225 Difference]: With dead ends: 104 [2020-10-23 22:02:07,107 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 22:02:07,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:02:07,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 22:02:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 22:02:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 22:02:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 22:02:07,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-10-23 22:02:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:02:07,110 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 22:02:07,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:02:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 22:02:07,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 22:02:07,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:02:07,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 22:02:07,695 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 26 [2020-10-23 22:02:08,043 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 26 [2020-10-23 22:02:08,749 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,749 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,749 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,750 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,750 INFO L277 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,750 INFO L277 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,750 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:02:08,750 INFO L277 CegarLoopResult]: At program point L4-5(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,750 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 22:02:08,751 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:02:08,751 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__return_107~0 |old(~__return_107~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 22:02:08,752 INFO L277 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-10-23 22:02:08,752 INFO L277 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,753 INFO L277 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,753 INFO L277 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-10-23 22:02:08,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:02:08,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:02:08,753 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:02:08,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 22:02:08,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:02:08,754 INFO L270 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-10-23 22:02:08,754 INFO L270 CegarLoopResult]: At program point L27(lines 27 49) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,754 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 9 78) the Hoare annotation is: true [2020-10-23 22:02:08,755 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-10-23 22:02:08,755 INFO L270 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-10-23 22:02:08,755 INFO L270 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-10-23 22:02:08,755 INFO L270 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,755 INFO L277 CegarLoopResult]: At program point L69(line 69) the Hoare annotation is: true [2020-10-23 22:02:08,755 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,755 INFO L270 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,756 INFO L270 CegarLoopResult]: At program point L36-2(line 36) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,756 INFO L270 CegarLoopResult]: At program point L61(lines 61 70) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-10-23 22:02:08,756 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-10-23 22:02:08,756 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse3 main_~main__x~0) 3))) (let ((.cse2 (div (+ .cse3 (* .cse1 (- 3)) main_~main__x~0) 4294967296))) (and (= |old(~__return_107~0)| ~__return_107~0) (<= (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 .cse2) 1) main_~main__x~0) (<= (* 1431655765 main_~main__x~0) (+ (* 6148914689804861440 .cse0) (* 4294967296 .cse1) (* 6148914689804861440 .cse2) 1431655765))))))) [2020-10-23 22:02:08,757 INFO L270 CegarLoopResult]: At program point L16(lines 16 77) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-10-23 22:02:08,757 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,757 INFO L270 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,757 INFO L270 CegarLoopResult]: At program point L37(lines 37 48) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,757 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 6148914689804861440 .cse0) (* 4294967295 .cse1) (* 6148914688373205674 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)) 2863311530)))) (* 1431655765 main_~main__x~0))) [2020-10-23 22:02:08,758 INFO L270 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-10-23 22:02:08,758 INFO L270 CegarLoopResult]: At program point L54(lines 54 76) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-10-23 22:02:08,758 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-10-23 22:02:08,758 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,758 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 9 78) the Hoare annotation is: true [2020-10-23 22:02:08,758 INFO L270 CegarLoopResult]: At program point L75(line 75) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,759 INFO L270 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: false [2020-10-23 22:02:08,759 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-10-23 22:02:08,759 INFO L270 CegarLoopResult]: At program point L63-1(line 63) the Hoare annotation is: false [2020-10-23 22:02:08,759 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 9 78) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,759 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-10-23 22:02:08,759 INFO L270 CegarLoopResult]: At program point L18(lines 18 50) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,760 INFO L270 CegarLoopResult]: At program point L47(lines 10 78) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-10-23 22:02:08,760 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,760 INFO L270 CegarLoopResult]: At program point L68(line 68) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,760 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-23 22:02:08,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:02:08 BoogieIcfgContainer [2020-10-23 22:02:08,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:02:08,791 INFO L168 Benchmark]: Toolchain (without parser) took 19832.04 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 130.3 MB in the beginning and 64.8 MB in the end (delta: 65.4 MB). Peak memory consumption was 101.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:02:08,792 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:02:08,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.16 ms. Allocated memory is still 153.1 MB. Free memory was 129.7 MB in the beginning and 120.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:02:08,795 INFO L168 Benchmark]: Boogie Preprocessor took 55.24 ms. Allocated memory is still 153.1 MB. Free memory was 120.2 MB in the beginning and 118.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:02:08,797 INFO L168 Benchmark]: RCFGBuilder took 529.28 ms. Allocated memory is still 153.1 MB. Free memory was 118.7 MB in the beginning and 102.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 22:02:08,804 INFO L168 Benchmark]: TraceAbstraction took 18865.58 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 102.4 MB in the beginning and 64.8 MB in the end (delta: 37.6 MB). Peak memory consumption was 72.9 MB. Max. memory is 8.0 GB. [2020-10-23 22:02:08,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 369.16 ms. Allocated memory is still 153.1 MB. Free memory was 129.7 MB in the beginning and 120.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.24 ms. Allocated memory is still 153.1 MB. Free memory was 120.2 MB in the beginning and 118.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 529.28 ms. Allocated memory is still 153.1 MB. Free memory was 118.7 MB in the beginning and 102.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18865.58 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 102.4 MB in the beginning and 64.8 MB in the end (delta: 37.6 MB). Peak memory consumption was 72.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 10]: Loop Invariant Derived loop invariant: (\old(__return_107) == __return_107 && main__y == 1) || (\old(__return_107) == __return_107 && main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 4294967296 * ((main__x / 4294967296 * -4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * -3 + main__x) / 4294967296)) - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 163 SDtfs, 176 SDslu, 144 SDs, 0 SdLazy, 411 SolverSat, 15 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, 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, 3 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 63 PreInvPairs, 115 NumberOfFragments, 893 HoareAnnotationTreeSize, 63 FomulaSimplifications, 5340 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 55 FomulaSimplificationsInter, 1203 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...