/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/sina3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:34,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:34,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:34,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:47:34,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:34,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:34,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:34,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:34,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:34,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:34,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:34,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:34,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:34,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:34,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:34,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:34,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:34,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:34,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:34,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:34,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:47:34,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:34,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:34,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:34,572 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:34,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:34,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:34,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:34,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:34,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:34,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:34,575 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:34,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:34,575 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:34,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:34,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:34,577 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:34,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:34,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:34,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:34,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:34,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:34,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:34,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:35,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:35,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:35,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:35,045 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:35,046 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:35,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina3f.c [2021-02-23 18:47:35,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a85162e/c5f579131a824926942467f6a87a7c61/FLAG2211740e3 [2021-02-23 18:47:35,824 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:35,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina3f.c [2021-02-23 18:47:35,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a85162e/c5f579131a824926942467f6a87a7c61/FLAG2211740e3 [2021-02-23 18:47:36,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a85162e/c5f579131a824926942467f6a87a7c61 [2021-02-23 18:47:36,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:36,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:36,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:36,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:36,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:36,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbeb4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36, skipping insertion in model container [2021-02-23 18:47:36,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:36,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:36,419 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/sina3f.c[589,602] [2021-02-23 18:47:36,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:36,455 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:36,472 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/sina3f.c[589,602] [2021-02-23 18:47:36,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:36,506 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:36,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36 WrapperNode [2021-02-23 18:47:36,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:36,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:36,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:36,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:36,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:36,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:36,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:36,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:36,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (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 [2021-02-23 18:47:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:37,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:37,232 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 18:47:37,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:37 BoogieIcfgContainer [2021-02-23 18:47:37,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:37,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:37,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:37,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:37,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:36" (1/3) ... [2021-02-23 18:47:37,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2631a381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:37, skipping insertion in model container [2021-02-23 18:47:37,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (2/3) ... [2021-02-23 18:47:37,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2631a381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:37, skipping insertion in model container [2021-02-23 18:47:37,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:37" (3/3) ... [2021-02-23 18:47:37,245 INFO L111 eAbstractionObserver]: Analyzing ICFG sina3f.c [2021-02-23 18:47:37,253 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:37,259 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:37,284 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:37,314 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:37,315 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:37,315 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:37,315 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:37,315 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:37,315 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:37,316 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:37,316 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-02-23 18:47:37,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 18:47:37,352 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:37,353 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] [2021-02-23 18:47:37,353 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:37,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1729300024, now seen corresponding path program 1 times [2021-02-23 18:47:37,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:37,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415679969] [2021-02-23 18:47:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:37,466 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:37,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:37,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:37,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:37,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:37,779 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-23 18:47:37,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:37,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:37,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:37,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:37,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:37,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:37,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415679969] [2021-02-23 18:47:37,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:37,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:37,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192868852] [2021-02-23 18:47:37,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:37,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:37,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:37,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:37,896 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-02-23 18:47:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:38,263 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2021-02-23 18:47:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:38,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2021-02-23 18:47:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:38,278 INFO L225 Difference]: With dead ends: 147 [2021-02-23 18:47:38,278 INFO L226 Difference]: Without dead ends: 75 [2021-02-23 18:47:38,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-23 18:47:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-02-23 18:47:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-23 18:47:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-02-23 18:47:38,345 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 44 [2021-02-23 18:47:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:38,346 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-02-23 18:47:38,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-02-23 18:47:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 18:47:38,348 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:38,348 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] [2021-02-23 18:47:38,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:38,349 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:38,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:38,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1192689582, now seen corresponding path program 1 times [2021-02-23 18:47:38,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:38,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789666723] [2021-02-23 18:47:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:38,355 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:38,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:38,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:38,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789666723] [2021-02-23 18:47:38,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:38,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:38,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60024220] [2021-02-23 18:47:38,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:38,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:38,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:38,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:38,636 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 5 states. [2021-02-23 18:47:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:39,089 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2021-02-23 18:47:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:39,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-02-23 18:47:39,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:39,095 INFO L225 Difference]: With dead ends: 145 [2021-02-23 18:47:39,095 INFO L226 Difference]: Without dead ends: 105 [2021-02-23 18:47:39,099 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 [2021-02-23 18:47:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-02-23 18:47:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2021-02-23 18:47:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 18:47:39,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-02-23 18:47:39,143 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 44 [2021-02-23 18:47:39,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:39,143 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-02-23 18:47:39,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-02-23 18:47:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 18:47:39,149 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:39,149 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] [2021-02-23 18:47:39,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:39,150 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash -217676284, now seen corresponding path program 1 times [2021-02-23 18:47:39,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:39,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977254776] [2021-02-23 18:47:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:39,192 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:39,199 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:39,335 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:39,382 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:39,428 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:39,429 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:39,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:39,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:39 BoogieIcfgContainer [2021-02-23 18:47:39,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:39,455 INFO L168 Benchmark]: Toolchain (without parser) took 3288.72 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 109.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,456 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:39,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,458 INFO L168 Benchmark]: Boogie Preprocessor took 50.53 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,458 INFO L168 Benchmark]: RCFGBuilder took 674.21 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 92.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,459 INFO L168 Benchmark]: TraceAbstraction took 2216.77 ms. Allocated memory is still 151.0 MB. Free memory was 91.7 MB in the beginning and 109.9 MB in the end (delta: -18.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:39,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.53 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 674.21 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 92.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2216.77 ms. Allocated memory is still 151.0 MB. Free memory was 91.7 MB in the beginning and 109.9 MB in the end (delta: -18.2 MB). There was no memory consumed. 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] long long *a = malloc(sizeof(long long)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 [L33] COND TRUE i