/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/res2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:16,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:16,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:16,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:20:16,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:20:16,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:20:16,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:20:16,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:20:16,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:20:16,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:20:16,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:20:16,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:20:16,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:16,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:16,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:16,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:16,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:16,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:16,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:16,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:16,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:16,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:16,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:16,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:16,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:16,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:16,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:16,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:16,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:20:16,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:16,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:16,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:16,197 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:16,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:16,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:16,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:16,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:16,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:16,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:16,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:16,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:16,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:16,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:16,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:16,201 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:16,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:16,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:16,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:16,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:16,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:16,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:16,202 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:16,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:16,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:16,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:16,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:16,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:16,627 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:16,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2021-02-22 02:20:16,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff9c2525/15a529dc962d4bd7b840e2308fa104c9/FLAG3b327e20f [2021-02-22 02:20:17,385 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:17,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2f.c [2021-02-22 02:20:17,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff9c2525/15a529dc962d4bd7b840e2308fa104c9/FLAG3b327e20f [2021-02-22 02:20:17,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff9c2525/15a529dc962d4bd7b840e2308fa104c9 [2021-02-22 02:20:17,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:17,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:17,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:17,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:17,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:17,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1516207a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17, skipping insertion in model container [2021-02-22 02:20:17,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:17,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:18,008 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/res2f.c[588,601] [2021-02-22 02:20:18,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:18,042 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:18,056 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/res2f.c[588,601] [2021-02-22 02:20:18,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:18,084 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:18,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18 WrapperNode [2021-02-22 02:20:18,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:18,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:18,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:18,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:18,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (1/1) ... [2021-02-22 02:20:18,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (1/1) ... [2021-02-22 02:20:18,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (1/1) ... [2021-02-22 02:20:18,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (1/1) ... [2021-02-22 02:20:18,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (1/1) ... [2021-02-22 02:20:18,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (1/1) ... [2021-02-22 02:20:18,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (1/1) ... [2021-02-22 02:20:18,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:18,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:18,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:18,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:18,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (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 [2021-02-22 02:20:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:18,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:18,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:18,991 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-22 02:20:18,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:18 BoogieIcfgContainer [2021-02-22 02:20:18,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:18,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:18,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:19,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:19,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:17" (1/3) ... [2021-02-22 02:20:19,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a858d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:19, skipping insertion in model container [2021-02-22 02:20:19,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:18" (2/3) ... [2021-02-22 02:20:19,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a858d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:19, skipping insertion in model container [2021-02-22 02:20:19,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:18" (3/3) ... [2021-02-22 02:20:19,005 INFO L111 eAbstractionObserver]: Analyzing ICFG res2f.c [2021-02-22 02:20:19,012 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:19,018 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:19,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:19,070 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:19,070 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:19,070 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:19,071 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:19,071 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:19,071 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:19,071 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:19,072 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2021-02-22 02:20:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-22 02:20:19,108 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:19,109 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] [2021-02-22 02:20:19,110 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:19,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:19,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1739395432, now seen corresponding path program 1 times [2021-02-22 02:20:19,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:19,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276250237] [2021-02-22 02:20:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:19,190 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:19,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:19,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:19,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:19,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276250237] [2021-02-22 02:20:19,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:19,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:19,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657306738] [2021-02-22 02:20:19,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:19,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:19,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:19,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:19,493 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2021-02-22 02:20:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:19,707 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2021-02-22 02:20:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:19,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2021-02-22 02:20:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:19,718 INFO L225 Difference]: With dead ends: 173 [2021-02-22 02:20:19,719 INFO L226 Difference]: Without dead ends: 85 [2021-02-22 02:20:19,723 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 [2021-02-22 02:20:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-22 02:20:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-02-22 02:20:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-22 02:20:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2021-02-22 02:20:19,774 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 48 [2021-02-22 02:20:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:19,775 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2021-02-22 02:20:19,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2021-02-22 02:20:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-22 02:20:19,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:19,778 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] [2021-02-22 02:20:19,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:19,778 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash -869560636, now seen corresponding path program 1 times [2021-02-22 02:20:19,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:19,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291281149] [2021-02-22 02:20:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:19,784 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:19,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:19,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:19,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:19,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:19,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:19,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291281149] [2021-02-22 02:20:19,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:19,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:19,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875944477] [2021-02-22 02:20:19,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:19,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:19,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:19,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:19,992 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 5 states. [2021-02-22 02:20:20,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:20,285 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2021-02-22 02:20:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:20,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2021-02-22 02:20:20,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:20,289 INFO L225 Difference]: With dead ends: 169 [2021-02-22 02:20:20,289 INFO L226 Difference]: Without dead ends: 121 [2021-02-22 02:20:20,291 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 [2021-02-22 02:20:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-22 02:20:20,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 91. [2021-02-22 02:20:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-22 02:20:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2021-02-22 02:20:20,310 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 48 [2021-02-22 02:20:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:20,310 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2021-02-22 02:20:20,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2021-02-22 02:20:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-22 02:20:20,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:20,314 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, 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] [2021-02-22 02:20:20,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:20,315 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:20,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1909009957, now seen corresponding path program 1 times [2021-02-22 02:20:20,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:20,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965797316] [2021-02-22 02:20:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:20,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:20,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:20,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:20,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:20,365 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:20,379 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:20,384 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:20,386 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:20,387 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:20,470 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:20,581 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:20,638 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:20,638 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:20,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:20,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:20 BoogieIcfgContainer [2021-02-22 02:20:20,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:20,660 INFO L168 Benchmark]: Toolchain (without parser) took 2911.93 ms. Allocated memory was 160.4 MB in the beginning and 201.3 MB in the end (delta: 40.9 MB). Free memory was 135.8 MB in the beginning and 133.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:20,661 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 140.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:20,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.15 ms. Allocated memory is still 160.4 MB. Free memory was 134.7 MB in the beginning and 124.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:20,662 INFO L168 Benchmark]: Boogie Preprocessor took 80.37 ms. Allocated memory is still 160.4 MB. Free memory was 124.3 MB in the beginning and 122.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:20,663 INFO L168 Benchmark]: RCFGBuilder took 825.90 ms. Allocated memory is still 160.4 MB. Free memory was 122.6 MB in the beginning and 131.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:20,664 INFO L168 Benchmark]: TraceAbstraction took 1661.94 ms. Allocated memory was 160.4 MB in the beginning and 201.3 MB in the end (delta: 40.9 MB). Free memory was 130.9 MB in the beginning and 133.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 39.2 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:20,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 140.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.15 ms. Allocated memory is still 160.4 MB. Free memory was 134.7 MB in the beginning and 124.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.37 ms. Allocated memory is still 160.4 MB. Free memory was 124.3 MB in the beginning and 122.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 825.90 ms. Allocated memory is still 160.4 MB. Free memory was 122.6 MB in the beginning and 131.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1661.94 ms. Allocated memory was 160.4 MB in the beginning and 201.3 MB in the end (delta: 40.9 MB). Free memory was 130.9 MB in the beginning and 133.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 39.2 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); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 1 [L34] i=0 [L34] COND TRUE i