/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/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:29,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:29,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:29,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:29,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:29,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:29,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:29,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:29,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:29,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:29,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:29,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:29,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:29,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:29,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:29,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:29,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:29,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:29,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:29,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:29,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:29,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:29,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:29,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:29,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:29,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:29,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:29,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:29,694 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 04:46:29,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:29,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:29,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:29,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:29,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:29,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:29,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:29,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:29,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:29,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:29,730 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:29,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:29,731 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:29,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:29,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:29,732 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:29,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:29,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:29,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:29,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:29,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:29,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:29,733 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:29,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:30,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:30,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:30,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:30,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:30,171 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:30,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2021-02-24 04:46:30,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea06bbc1/0ba14ab64f3b412085570c441a9cf2e2/FLAG833e7d97b [2021-02-24 04:46:30,893 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:30,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2021-02-24 04:46:30,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea06bbc1/0ba14ab64f3b412085570c441a9cf2e2/FLAG833e7d97b [2021-02-24 04:46:31,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea06bbc1/0ba14ab64f3b412085570c441a9cf2e2 [2021-02-24 04:46:31,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:31,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:31,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:31,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:31,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:31,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b79d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31, skipping insertion in model container [2021-02-24 04:46:31,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:31,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:31,475 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/indp2f.c[589,602] [2021-02-24 04:46:31,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:31,507 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:31,521 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/indp2f.c[589,602] [2021-02-24 04:46:31,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:31,547 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:31,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31 WrapperNode [2021-02-24 04:46:31,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:31,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:31,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:31,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:31,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (1/1) ... [2021-02-24 04:46:31,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:31,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:31,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:31,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:31,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (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 04:46:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:32,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:32,225 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 04:46:32,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:32 BoogieIcfgContainer [2021-02-24 04:46:32,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:32,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:32,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:32,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:32,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:31" (1/3) ... [2021-02-24 04:46:32,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f055bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:32, skipping insertion in model container [2021-02-24 04:46:32,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:31" (2/3) ... [2021-02-24 04:46:32,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f055bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:32, skipping insertion in model container [2021-02-24 04:46:32,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:32" (3/3) ... [2021-02-24 04:46:32,244 INFO L111 eAbstractionObserver]: Analyzing ICFG indp2f.c [2021-02-24 04:46:32,253 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:32,259 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:32,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:32,326 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:32,327 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:32,327 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:32,327 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:32,327 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:32,327 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:32,328 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:32,328 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2021-02-24 04:46:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:46:32,377 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:32,379 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] [2021-02-24 04:46:32,381 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:32,391 INFO L82 PathProgramCache]: Analyzing trace with hash -450027950, now seen corresponding path program 1 times [2021-02-24 04:46:32,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:32,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838394431] [2021-02-24 04:46:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:32,512 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:32,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:32,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:32,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:32,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:32,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:32,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:32,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:32,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:32,946 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 04:46:32,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838394431] [2021-02-24 04:46:32,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:32,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:32,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680207377] [2021-02-24 04:46:32,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:32,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:32,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:32,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:32,986 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2021-02-24 04:46:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:33,297 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2021-02-24 04:46:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:33,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 04:46:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:33,309 INFO L225 Difference]: With dead ends: 115 [2021-02-24 04:46:33,310 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 04:46:33,316 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 04:46:33,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 04:46:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-24 04:46:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-24 04:46:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-02-24 04:46:33,398 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 38 [2021-02-24 04:46:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:33,399 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-02-24 04:46:33,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-02-24 04:46:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:46:33,401 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:33,401 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] [2021-02-24 04:46:33,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:33,402 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash 549876134, now seen corresponding path program 1 times [2021-02-24 04:46:33,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:33,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817587020] [2021-02-24 04:46:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:33,407 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:33,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:33,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:33,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:33,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:33,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:33,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:33,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:33,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:33,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:33,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:33,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:33,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:33,578 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 04:46:33,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817587020] [2021-02-24 04:46:33,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:33,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:33,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046380919] [2021-02-24 04:46:33,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:33,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:33,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:33,582 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 5 states. [2021-02-24 04:46:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:33,891 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2021-02-24 04:46:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:33,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 04:46:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:33,895 INFO L225 Difference]: With dead ends: 113 [2021-02-24 04:46:33,895 INFO L226 Difference]: Without dead ends: 83 [2021-02-24 04:46:33,897 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 04:46:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-24 04:46:33,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2021-02-24 04:46:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-24 04:46:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-24 04:46:33,916 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-24 04:46:33,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:33,917 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-24 04:46:33,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-24 04:46:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 04:46:33,925 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:33,926 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] [2021-02-24 04:46:33,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:33,929 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:33,932 INFO L82 PathProgramCache]: Analyzing trace with hash 2050387401, now seen corresponding path program 1 times [2021-02-24 04:46:33,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:33,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663792811] [2021-02-24 04:46:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:33,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:33,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 04:46:33,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:33,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 04:46:33,998 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:34,012 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:34,020 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:34,024 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:34,025 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:34,045 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 04:46:34,045 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:34,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:34,068 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 04:46:34,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:34 BoogieIcfgContainer [2021-02-24 04:46:34,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:34,071 INFO L168 Benchmark]: Toolchain (without parser) took 2801.41 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 139.1 MB in the beginning and 134.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:34,072 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory was 136.5 MB in the beginning and 136.4 MB in the end (delta: 101.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:34,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.99 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 128.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:34,073 INFO L168 Benchmark]: Boogie Preprocessor took 45.41 ms. Allocated memory is still 163.6 MB. Free memory was 128.2 MB in the beginning and 126.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:34,074 INFO L168 Benchmark]: RCFGBuilder took 632.00 ms. Allocated memory is still 163.6 MB. Free memory was 126.5 MB in the beginning and 142.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:34,075 INFO L168 Benchmark]: TraceAbstraction took 1836.96 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 141.9 MB in the beginning and 134.4 MB in the end (delta: 7.4 MB). Peak memory consumption was 41.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:34,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory was 136.5 MB in the beginning and 136.4 MB in the end (delta: 101.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.99 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 128.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.41 ms. Allocated memory is still 163.6 MB. Free memory was 128.2 MB in the beginning and 126.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 632.00 ms. Allocated memory is still 163.6 MB. Free memory was 126.5 MB in the beginning and 142.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1836.96 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 141.9 MB in the beginning and 134.4 MB in the end (delta: 7.4 MB). Peak memory consumption was 41.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND TRUE i