/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/loops/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:27,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:27,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:27,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:17:28,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:28,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:28,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:28,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:28,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:28,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:28,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:28,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:28,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:28,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:28,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:28,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:28,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:17:28,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:28,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:28,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:28,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:17:28,091 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:28,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:28,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:28,096 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:28,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:28,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:28,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:28,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:28,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:28,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:28,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:28,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:28,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:28,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:28,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:28,099 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:28,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:28,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:28,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:28,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:28,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:28,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:28,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:28,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:28,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:28,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:28,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:28,570 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:28,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2021-02-21 21:17:28,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad4cba73f/c19d97b566204551bf4e0395d3d79bbc/FLAG831c9241a [2021-02-21 21:17:29,232 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:29,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c [2021-02-21 21:17:29,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad4cba73f/c19d97b566204551bf4e0395d3d79bbc/FLAG831c9241a [2021-02-21 21:17:29,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad4cba73f/c19d97b566204551bf4e0395d3d79bbc [2021-02-21 21:17:29,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:29,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:29,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:29,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:29,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:29,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5d3cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29, skipping insertion in model container [2021-02-21 21:17:29,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:29,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:29,788 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/n.c40.c[498,511] [2021-02-21 21:17:29,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:29,805 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:29,823 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/n.c40.c[498,511] [2021-02-21 21:17:29,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:29,840 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:29,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29 WrapperNode [2021-02-21 21:17:29,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:29,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:29,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:29,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:29,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (1/1) ... [2021-02-21 21:17:29,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:29,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:29,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:29,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:29,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (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 [2021-02-21 21:17:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:29,991 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:29,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:17:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:30,462 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:30,463 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:17:30,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:30 BoogieIcfgContainer [2021-02-21 21:17:30,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:30,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:30,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:30,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:30,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:29" (1/3) ... [2021-02-21 21:17:30,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28aacf23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:30, skipping insertion in model container [2021-02-21 21:17:30,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:29" (2/3) ... [2021-02-21 21:17:30,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28aacf23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:30, skipping insertion in model container [2021-02-21 21:17:30,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:30" (3/3) ... [2021-02-21 21:17:30,475 INFO L111 eAbstractionObserver]: Analyzing ICFG n.c40.c [2021-02-21 21:17:30,483 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:30,487 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:30,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:30,530 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:30,530 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:30,530 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:30,530 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:30,531 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:30,531 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:30,531 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:30,531 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:30,546 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2021-02-21 21:17:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 21:17:30,556 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:30,557 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, 1] [2021-02-21 21:17:30,557 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:30,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1065949594, now seen corresponding path program 1 times [2021-02-21 21:17:30,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:30,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521232516] [2021-02-21 21:17:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:30,689 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:30,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:30,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:30,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:30,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:30,980 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-21 21:17:30,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:31,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:31,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:31,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521232516] [2021-02-21 21:17:31,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:31,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:17:31,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581160006] [2021-02-21 21:17:31,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:17:31,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:31,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:17:31,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:31,086 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2021-02-21 21:17:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:31,349 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-02-21 21:17:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:17:31,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-02-21 21:17:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:31,362 INFO L225 Difference]: With dead ends: 60 [2021-02-21 21:17:31,362 INFO L226 Difference]: Without dead ends: 40 [2021-02-21 21:17:31,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-21 21:17:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-21 21:17:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-21 21:17:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-02-21 21:17:31,435 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 30 [2021-02-21 21:17:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:31,436 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-02-21 21:17:31,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:17:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-02-21 21:17:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-21 21:17:31,439 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:31,439 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, 1, 1, 1] [2021-02-21 21:17:31,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:31,440 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:31,441 INFO L82 PathProgramCache]: Analyzing trace with hash -896359144, now seen corresponding path program 1 times [2021-02-21 21:17:31,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:31,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121163649] [2021-02-21 21:17:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:31,451 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:31,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:31,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:31,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:31,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:31,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:31,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:31,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:31,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:31,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121163649] [2021-02-21 21:17:31,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:31,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:17:31,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915436878] [2021-02-21 21:17:31,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:17:31,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:31,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:17:31,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:17:31,680 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 4 states. [2021-02-21 21:17:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:31,887 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-02-21 21:17:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:17:31,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2021-02-21 21:17:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:31,893 INFO L225 Difference]: With dead ends: 56 [2021-02-21 21:17:31,893 INFO L226 Difference]: Without dead ends: 48 [2021-02-21 21:17:31,895 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 [2021-02-21 21:17:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-21 21:17:31,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-02-21 21:17:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-21 21:17:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-02-21 21:17:31,924 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 32 [2021-02-21 21:17:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:31,924 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-02-21 21:17:31,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:17:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-02-21 21:17:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-21 21:17:31,926 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:31,926 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:17:31,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:31,927 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:31,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1266891123, now seen corresponding path program 1 times [2021-02-21 21:17:31,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:31,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474871733] [2021-02-21 21:17:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:31,966 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:31,968 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:32,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:17:32,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:17:32,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 21:17:32,091 WARN L141 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-02-21 21:17:32,092 WARN L147 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size 17 [2021-02-21 21:17:32,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:32,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:32,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:32,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:17:32,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:17:32,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:32,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:17:32,231 WARN L141 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-02-21 21:17:32,234 WARN L147 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size 11 [2021-02-21 21:17:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:32,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474871733] [2021-02-21 21:17:32,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:32,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:17:32,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846430094] [2021-02-21 21:17:32,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:17:32,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:32,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:17:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:17:32,249 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 8 states. [2021-02-21 21:17:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:32,402 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-02-21 21:17:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:17:32,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2021-02-21 21:17:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:32,403 INFO L225 Difference]: With dead ends: 42 [2021-02-21 21:17:32,403 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:17:32,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:17:32,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:17:32,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:17:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:17:32,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:17:32,405 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-02-21 21:17:32,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:32,405 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:17:32,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:17:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:17:32,406 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:17:32,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:17:32,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:17:32,854 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 21:17:32,854 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 21:17:32,854 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 21:17:32,855 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 21:17:32,855 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 21:17:32,855 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:32,855 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 21:17:32,855 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:32,855 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-21 21:17:32,856 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:32,856 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#memory_int| |old(#memory_int)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= ~k~0 |old(~k~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#y~0.base| |old(~#y~0.base)|)) [2021-02-21 21:17:32,856 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|))) [2021-02-21 21:17:32,856 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= (select |#valid| |~#x~0.base|) 1) [2021-02-21 21:17:32,857 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:32,857 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1)) [2021-02-21 21:17:32,857 INFO L185 CegarLoopUtils]: At program point L8-2(line 8) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:32,857 INFO L185 CegarLoopUtils]: At program point L7-2(line 7) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|))) [2021-02-21 21:17:32,858 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 21:17:32,858 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 21:17:32,858 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:32,858 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:17:32,858 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:32,858 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:17:32,859 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:17:32,859 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 10 25) the Hoare annotation is: true [2021-02-21 21:17:32,859 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,859 INFO L185 CegarLoopUtils]: At program point L21-1(lines 21 22) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,859 INFO L185 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,860 INFO L192 CegarLoopUtils]: At program point L21-4(line 21) the Hoare annotation is: true [2021-02-21 21:17:32,860 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,860 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,860 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2021-02-21 21:17:32,861 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,861 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 10 25) the Hoare annotation is: true [2021-02-21 21:17:32,861 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2021-02-21 21:17:32,861 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2021-02-21 21:17:32,861 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,862 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 10 25) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2021-02-21 21:17:32,862 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,862 INFO L185 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,862 INFO L192 CegarLoopUtils]: At program point L20(lines 20 22) the Hoare annotation is: true [2021-02-21 21:17:32,863 INFO L185 CegarLoopUtils]: At program point L18(lines 10 25) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,863 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,863 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,863 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,864 INFO L185 CegarLoopUtils]: At program point L14-1(lines 14 17) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= |main_#t~mem8| 0) (= ~i~0 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))))) [2021-02-21 21:17:32,864 INFO L185 CegarLoopUtils]: At program point L14-2(line 14) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,864 INFO L185 CegarLoopUtils]: At program point L14-4(line 14) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,864 INFO L185 CegarLoopUtils]: At program point L14-5(lines 14 17) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2021-02-21 21:17:32,864 INFO L185 CegarLoopUtils]: At program point L14-6(lines 14 17) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:32,873 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:558) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-21 21:17:32,876 INFO L168 Benchmark]: Toolchain (without parser) took 3279.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 128.0 MB in the beginning and 120.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 93.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:32,877 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 126.5 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:17:32,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:32,879 INFO L168 Benchmark]: Boogie Preprocessor took 38.02 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:32,880 INFO L168 Benchmark]: RCFGBuilder took 584.90 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 99.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:32,881 INFO L168 Benchmark]: TraceAbstraction took 2407.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 99.2 MB in the beginning and 120.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:32,884 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 151.0 MB. Free memory was 126.7 MB in the beginning and 126.5 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 227.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.02 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 584.90 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 99.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2407.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 99.2 MB in the beginning and 120.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...