/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:17,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:17,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:17,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:17,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:17,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:17,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:17,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:17,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:17,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:17,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:17,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:17,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:17,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:17,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:17,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:17,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:17,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:17,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:17,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:17,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:17,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:17,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:17,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:17,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:17,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:17,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:17,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:17,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:17,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:17,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:17,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:17,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:17,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:17,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:17,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:17,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:17,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:17,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:17,566 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:17,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:17,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:17,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:17,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:17,567 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:17,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:17,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:17,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:17,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:17,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:17,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:17,569 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:17,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:18,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:18,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:18,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:18,080 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:18,080 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:18,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2021-02-24 04:46:18,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95eb0a99/2519e93937e24933b26b872899f01480/FLAG3ad82fd11 [2021-02-24 04:46:18,849 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:18,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2021-02-24 04:46:18,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95eb0a99/2519e93937e24933b26b872899f01480/FLAG3ad82fd11 [2021-02-24 04:46:19,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95eb0a99/2519e93937e24933b26b872899f01480 [2021-02-24 04:46:19,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:19,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:19,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:19,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:19,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:19,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cde0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19, skipping insertion in model container [2021-02-24 04:46:19,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:19,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:19,470 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c[589,602] [2021-02-24 04:46:19,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:19,509 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:19,522 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c[589,602] [2021-02-24 04:46:19,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:19,546 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:19,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19 WrapperNode [2021-02-24 04:46:19,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:19,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:19,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:19,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:19,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (1/1) ... [2021-02-24 04:46:19,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:19,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:19,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:19,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:19,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (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 [2021-02-24 04:46:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:20,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:20,037 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 04:46:20,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:20 BoogieIcfgContainer [2021-02-24 04:46:20,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:20,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:20,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:20,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:20,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:19" (1/3) ... [2021-02-24 04:46:20,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd84da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:20, skipping insertion in model container [2021-02-24 04:46:20,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:19" (2/3) ... [2021-02-24 04:46:20,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd84da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:20, skipping insertion in model container [2021-02-24 04:46:20,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:20" (3/3) ... [2021-02-24 04:46:20,083 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2021-02-24 04:46:20,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:20,100 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:20,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:20,194 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:20,194 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:20,194 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:20,194 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:20,195 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:20,195 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:20,195 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:20,195 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2021-02-24 04:46:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:46:20,227 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:20,228 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, 1, 1, 1, 1] [2021-02-24 04:46:20,229 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash -407844847, now seen corresponding path program 1 times [2021-02-24 04:46:20,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:20,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550653864] [2021-02-24 04:46:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:20,341 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:20,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:20,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:20,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:20,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:20,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:20,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:20,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:20,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:20,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:20,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:20,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550653864] [2021-02-24 04:46:20,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:20,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:20,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993797209] [2021-02-24 04:46:20,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:20,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:20,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:20,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:20,693 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2021-02-24 04:46:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:20,872 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2021-02-24 04:46:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:20,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-24 04:46:20,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:20,885 INFO L225 Difference]: With dead ends: 113 [2021-02-24 04:46:20,885 INFO L226 Difference]: Without dead ends: 60 [2021-02-24 04:46:20,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-24 04:46:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-02-24 04:46:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 04:46:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-02-24 04:46:20,945 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 36 [2021-02-24 04:46:20,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:20,945 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-02-24 04:46:20,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:20,946 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-02-24 04:46:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:46:20,947 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:20,948 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, 1, 1, 1, 1] [2021-02-24 04:46:20,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:20,949 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:20,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1753803708, now seen corresponding path program 1 times [2021-02-24 04:46:20,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:20,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339580074] [2021-02-24 04:46:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:20,954 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:21,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:21,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:21,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:21,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:21,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:21,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:21,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:21,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:21,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339580074] [2021-02-24 04:46:21,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:21,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:21,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127549061] [2021-02-24 04:46:21,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:21,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:21,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:21,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:21,181 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 5 states. [2021-02-24 04:46:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:21,496 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2021-02-24 04:46:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:21,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-24 04:46:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:21,501 INFO L225 Difference]: With dead ends: 110 [2021-02-24 04:46:21,501 INFO L226 Difference]: Without dead ends: 83 [2021-02-24 04:46:21,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-24 04:46:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2021-02-24 04:46:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-24 04:46:21,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-02-24 04:46:21,524 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 36 [2021-02-24 04:46:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:21,525 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-02-24 04:46:21,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-02-24 04:46:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-24 04:46:21,527 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:21,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:21,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:21,528 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash 146462172, now seen corresponding path program 1 times [2021-02-24 04:46:21,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:21,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695463592] [2021-02-24 04:46:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:21,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:46:21,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:46:21,608 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-24 04:46:21,624 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 04:46:21,629 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:21,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 04:46:21,644 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-24 04:46:21,652 WARN L141 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-02-24 04:46:21,655 WARN L147 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size 50 [2021-02-24 04:46:21,657 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:21,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:21,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:21,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:21,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:21,790 WARN L141 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-02-24 04:46:21,791 WARN L147 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size 11 [2021-02-24 04:46:21,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:21,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:21,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:21,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:21,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:21,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:21,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:21,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:21,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:21,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 04:46:21,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:21,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:46:21,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:21,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:21,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:46:21,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:21,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:21,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:46:21,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:46:22,006 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 c_~N~0) (exists ((|v_#memory_int_19| (Array Int (Array Int Int))) (|v_main_#t~nondet10_9| Int)) (and (<= 0 (+ |v_main_#t~nondet10_9| 2147483648)) (= |c_#memory_int| (store |v_#memory_int_19| c_main_~a~0.base (store (select |v_#memory_int_19| c_main_~a~0.base) (+ (* c_main_~i~0 4) c_main_~a~0.offset) |v_main_#t~nondet10_9|))) (<= |v_main_#t~nondet10_9| 2147483647)))) is different from true [2021-02-24 04:46:22,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:22,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:22,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:22,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:46:22,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 04:46:22,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:22,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:22,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:22,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:46:22,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:46:22,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:22,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:22,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:22,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:22,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 04:46:22,117 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 (+ c_~N~0 1)) (exists ((|v_#memory_int_19| (Array Int (Array Int Int))) (|v_main_#t~nondet10_9| Int)) (and (<= 0 (+ |v_main_#t~nondet10_9| 2147483648)) (<= |v_main_#t~nondet10_9| 2147483647) (= |c_#memory_int| (store |v_#memory_int_19| c_main_~a~0.base (store (select |v_#memory_int_19| c_main_~a~0.base) (+ (* c_main_~i~0 4) c_main_~a~0.offset (- 4)) |v_main_#t~nondet10_9|)))))) is different from true [2021-02-24 04:46:22,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:22,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:22,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695463592] [2021-02-24 04:46:22,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:22,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:46:22,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545667434] [2021-02-24 04:46:22,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:46:22,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:22,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:46:22,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=177, Unknown=3, NotChecked=54, Total=272 [2021-02-24 04:46:22,123 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 17 states. [2021-02-24 04:46:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:22,954 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-02-24 04:46:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 04:46:22,955 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2021-02-24 04:46:22,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:22,965 INFO L225 Difference]: With dead ends: 118 [2021-02-24 04:46:22,965 INFO L226 Difference]: Without dead ends: 116 [2021-02-24 04:46:22,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=632, Unknown=9, NotChecked=106, Total=870 [2021-02-24 04:46:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-02-24 04:46:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 78. [2021-02-24 04:46:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:46:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-02-24 04:46:23,005 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 51 [2021-02-24 04:46:23,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:23,005 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-02-24 04:46:23,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:46:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-02-24 04:46:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 04:46:23,012 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:23,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:23,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:46:23,017 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:23,018 INFO L82 PathProgramCache]: Analyzing trace with hash -904490591, now seen corresponding path program 1 times [2021-02-24 04:46:23,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:23,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197492989] [2021-02-24 04:46:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:23,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:23,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:46:23,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:23,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:46:23,059 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-24 04:46:23,064 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 04:46:23,066 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:23,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:23,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:23,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 04:46:23,085 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-24 04:46:23,090 WARN L141 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-02-24 04:46:23,095 WARN L147 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size 50 [2021-02-24 04:46:23,096 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:23,160 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:23,184 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:23,215 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:23,215 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:23,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:46:23,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:23 BoogieIcfgContainer [2021-02-24 04:46:23,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:23,237 INFO L168 Benchmark]: Toolchain (without parser) took 4033.84 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 136.1 MB in the beginning and 90.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 79.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:23,238 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 140.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:23,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.94 ms. Allocated memory is still 159.4 MB. Free memory was 135.2 MB in the beginning and 125.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:23,239 INFO L168 Benchmark]: Boogie Preprocessor took 41.23 ms. Allocated memory is still 159.4 MB. Free memory was 125.3 MB in the beginning and 123.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:23,240 INFO L168 Benchmark]: RCFGBuilder took 448.77 ms. Allocated memory is still 159.4 MB. Free memory was 123.6 MB in the beginning and 104.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:23,241 INFO L168 Benchmark]: TraceAbstraction took 3168.63 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 142.4 MB in the beginning and 90.9 MB in the end (delta: 51.5 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:23,244 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 159.4 MB. Free memory is still 140.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.94 ms. Allocated memory is still 159.4 MB. Free memory was 135.2 MB in the beginning and 125.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.23 ms. Allocated memory is still 159.4 MB. Free memory was 125.3 MB in the beginning and 123.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 448.77 ms. Allocated memory is still 159.4 MB. Free memory was 123.6 MB in the beginning and 104.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3168.63 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 142.4 MB in the beginning and 90.9 MB in the end (delta: 51.5 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int *a = malloc(sizeof(int)*N); [L30] i=0 [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ [L35] COND FALSE !(i