/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/array-fpi/s5iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:02,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:02,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:02,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:17:02,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:17:02,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:17:02,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:17:02,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:17:02,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:17:02,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:17:02,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:17:02,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:17:02,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:02,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:02,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:02,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:02,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:02,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:02,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:02,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:02,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:02,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:02,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:02,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:02,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:17:02,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:02,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:02,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:02,718 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 21:17:02,730 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:02,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:02,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:02,732 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:02,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:02,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:02,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:02,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:02,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:02,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:02,734 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:02,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:02,734 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:02,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:02,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:02,735 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:02,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:02,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:02,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:02,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:02,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:02,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:02,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:03,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:03,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:03,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:03,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:03,143 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:03,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5iff.c [2021-02-21 21:17:03,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8954e63/287a1d5948b64d338edc937d76dc244c/FLAGff6c2c1c7 [2021-02-21 21:17:03,848 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:03,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s5iff.c [2021-02-21 21:17:03,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8954e63/287a1d5948b64d338edc937d76dc244c/FLAGff6c2c1c7 [2021-02-21 21:17:04,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8954e63/287a1d5948b64d338edc937d76dc244c [2021-02-21 21:17:04,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:04,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:04,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:04,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:04,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:04,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8f7fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04, skipping insertion in model container [2021-02-21 21:17:04,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:04,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:04,413 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/s5iff.c[588,601] [2021-02-21 21:17:04,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:04,441 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:04,455 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/s5iff.c[588,601] [2021-02-21 21:17:04,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:04,481 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:04,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04 WrapperNode [2021-02-21 21:17:04,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:04,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:04,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:04,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:04,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (1/1) ... [2021-02-21 21:17:04,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:04,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:04,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:04,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:04,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (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 21:17:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:17:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:17:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:17:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:17:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:17:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:17:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:17:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:05,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:05,065 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:17:05,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:05 BoogieIcfgContainer [2021-02-21 21:17:05,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:05,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:05,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:05,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:05,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:04" (1/3) ... [2021-02-21 21:17:05,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159e2e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:05, skipping insertion in model container [2021-02-21 21:17:05,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:04" (2/3) ... [2021-02-21 21:17:05,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159e2e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:05, skipping insertion in model container [2021-02-21 21:17:05,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:05" (3/3) ... [2021-02-21 21:17:05,077 INFO L111 eAbstractionObserver]: Analyzing ICFG s5iff.c [2021-02-21 21:17:05,084 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:05,093 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:05,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:05,139 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:05,140 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:05,140 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:05,140 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:05,140 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:05,140 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:05,140 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:05,141 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-21 21:17:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:17:05,170 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:05,171 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] [2021-02-21 21:17:05,171 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:05,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:05,178 INFO L82 PathProgramCache]: Analyzing trace with hash 137751759, now seen corresponding path program 1 times [2021-02-21 21:17:05,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:05,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749646650] [2021-02-21 21:17:05,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:05,272 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:05,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:05,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:05,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:05,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:17:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:05,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:05,554 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 21:17:05,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749646650] [2021-02-21 21:17:05,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:05,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:17:05,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71292263] [2021-02-21 21:17:05,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:17:05,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:05,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:17:05,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:05,581 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-21 21:17:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:05,744 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-02-21 21:17:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:17:05,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-21 21:17:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:05,755 INFO L225 Difference]: With dead ends: 119 [2021-02-21 21:17:05,755 INFO L226 Difference]: Without dead ends: 58 [2021-02-21 21:17:05,759 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 [2021-02-21 21:17:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-21 21:17:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-21 21:17:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-21 21:17:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-02-21 21:17:05,815 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 36 [2021-02-21 21:17:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:05,815 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-02-21 21:17:05,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:17:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-02-21 21:17:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:17:05,818 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:05,818 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] [2021-02-21 21:17:05,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:05,818 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1632327928, now seen corresponding path program 1 times [2021-02-21 21:17:05,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:05,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822946472] [2021-02-21 21:17:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:05,824 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:05,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:05,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:05,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:17:05,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:05,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:05,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:17:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:05,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:05,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:05,993 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 21:17:05,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822946472] [2021-02-21 21:17:05,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:05,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:17:05,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014154223] [2021-02-21 21:17:05,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:17:05,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:05,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:17:05,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:17:05,997 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2021-02-21 21:17:06,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:06,241 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-02-21 21:17:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:17:06,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-21 21:17:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:06,244 INFO L225 Difference]: With dead ends: 104 [2021-02-21 21:17:06,244 INFO L226 Difference]: Without dead ends: 79 [2021-02-21 21:17:06,249 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 [2021-02-21 21:17:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-21 21:17:06,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2021-02-21 21:17:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-21 21:17:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-21 21:17:06,266 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 36 [2021-02-21 21:17:06,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:06,267 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-21 21:17:06,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:17:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-21 21:17:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 21:17:06,269 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:06,269 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] [2021-02-21 21:17:06,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:06,270 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash -881259695, now seen corresponding path program 1 times [2021-02-21 21:17:06,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:06,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095999872] [2021-02-21 21:17:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:06,297 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:06,299 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:17:06,368 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:17:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:17:06,433 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:17:06,474 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:17:06,474 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:17:06,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:17:06,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:17:06 BoogieIcfgContainer [2021-02-21 21:17:06,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:17:06,495 INFO L168 Benchmark]: Toolchain (without parser) took 2285.26 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 127.5 MB in the beginning and 140.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:06,496 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:17:06,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:06,498 INFO L168 Benchmark]: Boogie Preprocessor took 40.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:06,498 INFO L168 Benchmark]: RCFGBuilder took 543.01 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 130.8 MB in the end (delta: -16.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:06,500 INFO L168 Benchmark]: TraceAbstraction took 1424.54 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 130.3 MB in the beginning and 140.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:06,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 543.01 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 130.8 MB in the end (delta: -16.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1424.54 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 130.3 MB in the beginning and 140.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 35.8 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] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i