/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:44:44,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:44:44,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:44:44,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 06:44:44,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:44:44,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:44:44,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:44:44,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:44:44,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:44:44,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:44:44,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:44:44,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:44:44,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:44:44,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:44:44,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:44:44,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:44:44,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 06:44:44,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 06:44:44,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 06:44:44,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 06:44:44,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 06:44:44,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 06:44:44,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 06:44:44,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 06:44:44,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 06:44:44,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:44:44,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:44:44,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:44:44,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:44:44,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:44:44,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:44:44,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:44:44,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:44:44,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:44:44,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:44:44,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:44:44,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:44:44,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:44:44,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:44:44,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:44:44,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:44:44,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:44:44,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:44:44,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:44:44,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:44:44,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:44:44,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:44:44,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:44:44,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:44:44,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:44:44,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:44:44,843 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:44:44,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:44:45,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:44:45,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:44:45,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:44:45,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:44:45,198 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:44:45,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2021-04-16 06:44:45,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205d16ac9/e31eb4ffaffd4d1694516cb02c478c59/FLAGa09626e67 [2021-04-16 06:44:45,630 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:44:45,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2021-04-16 06:44:45,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205d16ac9/e31eb4ffaffd4d1694516cb02c478c59/FLAGa09626e67 [2021-04-16 06:44:46,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205d16ac9/e31eb4ffaffd4d1694516cb02c478c59 [2021-04-16 06:44:46,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:44:46,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:44:46,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:44:46,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:44:46,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:44:46,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d12d7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46, skipping insertion in model container [2021-04-16 06:44:46,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:44:46,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:44:46,205 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c[319,332] [2021-04-16 06:44:46,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:44:46,238 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:44:46,248 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c[319,332] [2021-04-16 06:44:46,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:44:46,277 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:44:46,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46 WrapperNode [2021-04-16 06:44:46,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:44:46,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:44:46,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:44:46,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:44:46,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (1/1) ... [2021-04-16 06:44:46,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:44:46,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:44:46,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:44:46,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:44:46,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (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 [2021-04-16 06:44:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:44:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:44:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:44:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:44:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:44:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:44:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:44:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:44:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:44:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:44:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 06:44:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:44:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:44:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:44:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:44:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:44:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:44:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:44:46,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:44:46,766 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 06:44:46,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:44:46 BoogieIcfgContainer [2021-04-16 06:44:46,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:44:46,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:44:46,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:44:46,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:44:46,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:44:46" (1/3) ... [2021-04-16 06:44:46,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60266934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:44:46, skipping insertion in model container [2021-04-16 06:44:46,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:46" (2/3) ... [2021-04-16 06:44:46,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60266934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:44:46, skipping insertion in model container [2021-04-16 06:44:46,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:44:46" (3/3) ... [2021-04-16 06:44:46,773 INFO L111 eAbstractionObserver]: Analyzing ICFG array-1.c [2021-04-16 06:44:46,778 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:44:46,781 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:44:46,804 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:44:46,825 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:44:46,825 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:44:46,825 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:44:46,825 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:44:46,825 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:44:46,825 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:44:46,826 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:44:46,826 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:44:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 06:44:46,841 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:46,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:46,842 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash -588233041, now seen corresponding path program 1 times [2021-04-16 06:44:46,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:46,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333747922] [2021-04-16 06:44:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:46,921 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:47,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333747922] [2021-04-16 06:44:47,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:47,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 06:44:47,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551234945] [2021-04-16 06:44:47,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 06:44:47,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:47,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 06:44:47,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:44:47,129 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:47,183 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-04-16 06:44:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 06:44:47,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 06:44:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:47,190 INFO L225 Difference]: With dead ends: 35 [2021-04-16 06:44:47,190 INFO L226 Difference]: Without dead ends: 15 [2021-04-16 06:44:47,192 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:44:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-04-16 06:44:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-04-16 06:44:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-04-16 06:44:47,220 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-04-16 06:44:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:47,220 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-04-16 06:44:47,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-04-16 06:44:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 06:44:47,221 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:47,221 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:47,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:44:47,222 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:47,223 INFO L82 PathProgramCache]: Analyzing trace with hash -903153702, now seen corresponding path program 1 times [2021-04-16 06:44:47,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:47,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858320897] [2021-04-16 06:44:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:47,226 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,298 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-04-16 06:44:47,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:44:47,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:47,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858320897] [2021-04-16 06:44:47,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:47,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 06:44:47,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708259580] [2021-04-16 06:44:47,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 06:44:47,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:47,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 06:44:47,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:44:47,389 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:47,468 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-04-16 06:44:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 06:44:47,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 06:44:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:47,469 INFO L225 Difference]: With dead ends: 24 [2021-04-16 06:44:47,470 INFO L226 Difference]: Without dead ends: 18 [2021-04-16 06:44:47,471 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:44:47,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-04-16 06:44:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-04-16 06:44:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-04-16 06:44:47,476 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2021-04-16 06:44:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:47,476 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-04-16 06:44:47,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-04-16 06:44:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-16 06:44:47,477 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:47,477 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:47,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:44:47,478 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:47,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:47,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1274683932, now seen corresponding path program 1 times [2021-04-16 06:44:47,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:47,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943811319] [2021-04-16 06:44:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:47,503 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:47,508 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,620 INFO L142 QuantifierPusher]: treesize reduction 12, result has 94.2 percent of original size [2021-04-16 06:44:47,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-04-16 06:44:47,676 INFO L142 QuantifierPusher]: treesize reduction 42, result has 92.3 percent of original size [2021-04-16 06:44:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 504 [2021-04-16 06:44:47,810 INFO L142 QuantifierPusher]: treesize reduction 41, result has 91.6 percent of original size [2021-04-16 06:44:47,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 450 [2021-04-16 06:44:47,925 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-04-16 06:44:47,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:47,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:47,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:47,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:44:47,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:48,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943811319] [2021-04-16 06:44:48,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:48,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:44:48,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829901734] [2021-04-16 06:44:48,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:44:48,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:48,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:44:48,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:44:48,032 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:48,247 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-04-16 06:44:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:44:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-04-16 06:44:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:48,257 INFO L225 Difference]: With dead ends: 25 [2021-04-16 06:44:48,257 INFO L226 Difference]: Without dead ends: 19 [2021-04-16 06:44:48,258 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 383.5ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-04-16 06:44:48,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-04-16 06:44:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-04-16 06:44:48,263 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-04-16 06:44:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:48,264 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-04-16 06:44:48,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-04-16 06:44:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-16 06:44:48,264 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:48,264 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:48,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:44:48,265 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:48,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1459665050, now seen corresponding path program 2 times [2021-04-16 06:44:48,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:48,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676273382] [2021-04-16 06:44:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:48,274 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:48,276 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,315 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-04-16 06:44:48,315 INFO L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-04-16 06:44:48,330 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-04-16 06:44:48,331 INFO L147 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size 26 [2021-04-16 06:44:48,356 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-04-16 06:44:48,357 INFO L147 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-04-16 06:44:48,371 INFO L142 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-04-16 06:44:48,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:48,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676273382] [2021-04-16 06:44:48,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:48,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:44:48,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508232411] [2021-04-16 06:44:48,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:44:48,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:48,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:44:48,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:48,407 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:48,447 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-04-16 06:44:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:44:48,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-04-16 06:44:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:48,449 INFO L225 Difference]: With dead ends: 19 [2021-04-16 06:44:48,449 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 06:44:48,450 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 06:44:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 06:44:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 06:44:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 06:44:48,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-04-16 06:44:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:48,451 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 06:44:48,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 06:44:48,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 06:44:48,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 06:44:48,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 06:44:48,685 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-04-16 06:44:48,685 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-04-16 06:44:48,686 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-04-16 06:44:48,686 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-04-16 06:44:48,686 INFO L194 CegarLoopUtils]: 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)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-04-16 06:44:48,686 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-04-16 06:44:48,686 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-04-16 06:44:48,686 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-16 06:44:48,687 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 06:44:48,687 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-04-16 06:44:48,687 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 13 31) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-04-16 06:44:48,687 INFO L194 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~menor~0 |main_#t~mem12|) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) [2021-04-16 06:44:48,690 INFO L201 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-04-16 06:44:48,691 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 13 31) the Hoare annotation is: true [2021-04-16 06:44:48,691 INFO L194 CegarLoopUtils]: At program point L24(lines 24 25) the Hoare annotation is: (and (= main_~j~0 0) (<= main_~SIZE~0 1) (= |main_~#array~0.offset| 0) (= |main_#t~mem10| (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~j~0 4) (* (div main_~j~0 4294967296) (- 17179869184)) |main_~#array~0.offset|))) (< 0 (+ (div main_~SIZE~0 4294967296) 1))) [2021-04-16 06:44:48,691 INFO L194 CegarLoopUtils]: At program point L21-2(lines 21 26) the Hoare annotation is: (and (= main_~j~0 0) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~j~0 4) (* (div main_~j~0 4294967296) (- 17179869184)) |main_~#array~0.offset|))) (<= main_~SIZE~0 1) (= |main_~#array~0.offset| 0) (< 0 (+ (div main_~SIZE~0 4294967296) 1))) [2021-04-16 06:44:48,697 INFO L194 CegarLoopUtils]: At program point L21-3(lines 21 26) the Hoare annotation is: (or (and (<= 1 main_~SIZE~0) (= main_~j~0 0) (<= main_~SIZE~0 1) (= |main_~#array~0.offset| 0)) (and (<= main_~SIZE~0 main_~j~0) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (<= (div main_~j~0 4294967296) 0) (< 0 (+ (div main_~SIZE~0 4294967296) 1)))) [2021-04-16 06:44:48,697 INFO L194 CegarLoopUtils]: At program point L21-4(lines 21 26) the Hoare annotation is: (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) [2021-04-16 06:44:48,697 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 13 31) the Hoare annotation is: true [2021-04-16 06:44:48,697 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-04-16 06:44:48,697 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-04-16 06:44:48,697 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-04-16 06:44:48,697 INFO L194 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-04-16 06:44:48,697 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-04-16 06:44:48,697 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-04-16 06:44:48,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 06:44:48 BoogieIcfgContainer [2021-04-16 06:44:48,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 06:44:48,709 INFO L168 Benchmark]: Toolchain (without parser) took 2634.09 ms. Allocated memory is still 189.8 MB. Free memory was 155.5 MB in the beginning and 83.5 MB in the end (delta: 72.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 8.0 GB. [2021-04-16 06:44:48,710 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 189.8 MB. Free memory is still 171.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 06:44:48,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.95 ms. Allocated memory is still 189.8 MB. Free memory was 155.2 MB in the beginning and 145.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 06:44:48,711 INFO L168 Benchmark]: Boogie Preprocessor took 41.56 ms. Allocated memory is still 189.8 MB. Free memory was 145.7 MB in the beginning and 144.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 06:44:48,711 INFO L168 Benchmark]: RCFGBuilder took 446.28 ms. Allocated memory is still 189.8 MB. Free memory was 144.2 MB in the beginning and 159.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-04-16 06:44:48,712 INFO L168 Benchmark]: TraceAbstraction took 1939.75 ms. Allocated memory is still 189.8 MB. Free memory was 158.7 MB in the beginning and 83.5 MB in the end (delta: 75.2 MB). Peak memory consumption was 75.7 MB. Max. memory is 8.0 GB. [2021-04-16 06:44:48,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 189.8 MB. Free memory is still 171.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 197.95 ms. Allocated memory is still 189.8 MB. Free memory was 155.2 MB in the beginning and 145.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.56 ms. Allocated memory is still 189.8 MB. Free memory was 145.7 MB in the beginning and 144.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 446.28 ms. Allocated memory is still 189.8 MB. Free memory was 144.2 MB in the beginning and 159.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1939.75 ms. Allocated memory is still 189.8 MB. Free memory was 158.7 MB in the beginning and 83.5 MB in the end (delta: 75.2 MB). Peak memory consumption was 75.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1629.7ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 10.2ms, AutomataDifference: 429.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 232.1ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 19 SDslu, 55 SDs, 0 SdLazy, 128 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 185.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 558.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 22 LocationsWithAnnotation, 40 PreInvPairs, 57 NumberOfFragments, 185 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 70.7ms HoareSimplificationTime, 22 FomulaSimplificationsInter, 177 FormulaSimplificationTreeSizeReductionInter, 148.2ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((1 <= SIZE && j == 0) && SIZE <= 1) && array == 0) || (((SIZE <= j && menor <= unknown-#memory_int-unknown[array][array]) && j / 4294967296 <= 0) && 0 < SIZE / 4294967296 + 1) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...