/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/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:15,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:15,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:15,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:15,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:15,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:15,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:15,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:15,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:15,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:15,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:15,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:15,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:15,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:15,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:15,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:15,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:15,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:15,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:15,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:15,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:15,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:15,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:15,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:15,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:15,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:15,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:15,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:15,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:16:15,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:15,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:15,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:15,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:15,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:15,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:15,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:15,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:15,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:15,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:15,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:15,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:15,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:15,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:15,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:15,281 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:15,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:15,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:15,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:15,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:15,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:15,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:15,283 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:15,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:15,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:15,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:15,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:15,763 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:15,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2021-02-21 21:16:15,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438caace4/4c3242b51b3342618bfc0b9c344a0002/FLAG05f4247d4 [2021-02-21 21:16:16,524 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:16,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c [2021-02-21 21:16:16,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438caace4/4c3242b51b3342618bfc0b9c344a0002/FLAG05f4247d4 [2021-02-21 21:16:16,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438caace4/4c3242b51b3342618bfc0b9c344a0002 [2021-02-21 21:16:16,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:16,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:16,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:16,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:16,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:16,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:16" (1/1) ... [2021-02-21 21:16:16,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bc3dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:16, skipping insertion in model container [2021-02-21 21:16:16,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:16" (1/1) ... [2021-02-21 21:16:16,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:16,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:17,212 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/condaf.c[589,602] [2021-02-21 21:16:17,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:17,257 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:17,275 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/condaf.c[589,602] [2021-02-21 21:16:17,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:17,309 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:17,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17 WrapperNode [2021-02-21 21:16:17,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:17,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:17,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:17,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:17,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:17,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:17,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:17,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:17,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:17,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:18,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:18,043 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:16:18,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:18 BoogieIcfgContainer [2021-02-21 21:16:18,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:18,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:18,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:18,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:18,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:16" (1/3) ... [2021-02-21 21:16:18,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6592874f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:18, skipping insertion in model container [2021-02-21 21:16:18,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (2/3) ... [2021-02-21 21:16:18,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6592874f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:18, skipping insertion in model container [2021-02-21 21:16:18,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:18" (3/3) ... [2021-02-21 21:16:18,054 INFO L111 eAbstractionObserver]: Analyzing ICFG condaf.c [2021-02-21 21:16:18,060 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:18,065 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:18,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:18,108 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:18,108 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:18,108 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:18,109 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:18,109 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:18,109 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:18,109 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:18,109 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-21 21:16:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:16:18,136 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:18,137 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] [2021-02-21 21:16:18,138 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:18,148 INFO L82 PathProgramCache]: Analyzing trace with hash -276473570, now seen corresponding path program 1 times [2021-02-21 21:16:18,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:18,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116457653] [2021-02-21 21:16:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:18,238 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:18,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116457653] [2021-02-21 21:16:18,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:18,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:18,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006295870] [2021-02-21 21:16:18,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:18,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:18,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:18,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:18,690 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2021-02-21 21:16:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:19,035 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2021-02-21 21:16:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:19,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-21 21:16:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:19,047 INFO L225 Difference]: With dead ends: 131 [2021-02-21 21:16:19,048 INFO L226 Difference]: Without dead ends: 64 [2021-02-21 21:16:19,052 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 [2021-02-21 21:16:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-21 21:16:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-21 21:16:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-21 21:16:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-21 21:16:19,104 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-21 21:16:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:19,105 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-21 21:16:19,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-21 21:16:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:16:19,107 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:19,108 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] [2021-02-21 21:16:19,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:19,108 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1119969012, now seen corresponding path program 1 times [2021-02-21 21:16:19,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:19,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467222344] [2021-02-21 21:16:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:19,113 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:19,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:19,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:19,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467222344] [2021-02-21 21:16:19,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:19,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:19,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742715580] [2021-02-21 21:16:19,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:19,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:19,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:19,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:19,319 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2021-02-21 21:16:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:19,709 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-02-21 21:16:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:19,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-21 21:16:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:19,712 INFO L225 Difference]: With dead ends: 120 [2021-02-21 21:16:19,713 INFO L226 Difference]: Without dead ends: 89 [2021-02-21 21:16:19,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:16:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-21 21:16:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2021-02-21 21:16:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-21 21:16:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-21 21:16:19,731 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 38 [2021-02-21 21:16:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:19,731 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-21 21:16:19,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-21 21:16:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 21:16:19,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:19,734 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] [2021-02-21 21:16:19,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:19,734 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1778519661, now seen corresponding path program 1 times [2021-02-21 21:16:19,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:19,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953576309] [2021-02-21 21:16:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:19,763 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:19,765 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:19,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:16:19,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:16:19,969 WARN L141 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-02-21 21:16:19,971 WARN L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-02-21 21:16:20,005 WARN L141 QuantifierPusher]: treesize reduction 28, result has 56.3 percent of original size [2021-02-21 21:16:20,007 WARN L147 QuantifierPusher]: treesize reduction 28, result has 56.3 percent of original size 36 [2021-02-21 21:16:20,077 WARN L141 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-02-21 21:16:20,079 WARN L147 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size 24 [2021-02-21 21:16:20,122 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-02-21 21:16:20,124 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-02-21 21:16:20,165 WARN L141 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-02-21 21:16:20,166 WARN L147 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size 15 [2021-02-21 21:16:20,195 WARN L141 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size [2021-02-21 21:16:20,197 WARN L147 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size 31 [2021-02-21 21:16:20,268 WARN L141 QuantifierPusher]: treesize reduction 32, result has 41.8 percent of original size [2021-02-21 21:16:20,270 WARN L147 QuantifierPusher]: treesize reduction 32, result has 41.8 percent of original size 23 [2021-02-21 21:16:20,325 WARN L141 QuantifierPusher]: treesize reduction 25, result has 41.9 percent of original size [2021-02-21 21:16:20,327 WARN L147 QuantifierPusher]: treesize reduction 25, result has 41.9 percent of original size 18 [2021-02-21 21:16:20,330 WARN L141 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-02-21 21:16:20,331 WARN L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-02-21 21:16:20,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:20,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:20,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:20,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:20,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:20,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:20,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:20,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953576309] [2021-02-21 21:16:20,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:20,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:16:20,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310254500] [2021-02-21 21:16:20,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:16:20,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:20,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:16:20,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:16:20,428 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 12 states. [2021-02-21 21:16:21,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:21,290 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-02-21 21:16:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:16:21,291 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2021-02-21 21:16:21,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:21,293 INFO L225 Difference]: With dead ends: 132 [2021-02-21 21:16:21,293 INFO L226 Difference]: Without dead ends: 101 [2021-02-21 21:16:21,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-02-21 21:16:21,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-21 21:16:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2021-02-21 21:16:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-21 21:16:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-21 21:16:21,311 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 62 [2021-02-21 21:16:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:21,312 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-21 21:16:21,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:16:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-21 21:16:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 21:16:21,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:21,314 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] [2021-02-21 21:16:21,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:21,315 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:21,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:21,316 INFO L82 PathProgramCache]: Analyzing trace with hash -955592423, now seen corresponding path program 1 times [2021-02-21 21:16:21,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:21,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166790355] [2021-02-21 21:16:21,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:21,321 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:21,323 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:21,356 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:21,402 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:21,463 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:16:21,463 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:21,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:16:21,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:21 BoogieIcfgContainer [2021-02-21 21:16:21,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:21,484 INFO L168 Benchmark]: Toolchain (without parser) took 4563.54 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 127.3 MB in the beginning and 73.9 MB in the end (delta: 53.4 MB). Peak memory consumption was 88.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:21,484 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:21,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:21,486 INFO L168 Benchmark]: Boogie Preprocessor took 43.59 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:21,487 INFO L168 Benchmark]: RCFGBuilder took 689.50 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 125.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:21,488 INFO L168 Benchmark]: TraceAbstraction took 3435.43 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 124.6 MB in the beginning and 73.9 MB in the end (delta: 50.6 MB). Peak memory consumption was 85.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:21,491 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 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 371.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.59 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 689.50 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 125.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3435.43 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 124.6 MB in the beginning and 73.9 MB in the end (delta: 50.6 MB). Peak memory consumption was 85.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i