/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/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:49,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:49,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:49,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:49,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:49,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:49,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:49,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:49,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:49,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:49,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:49,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:49,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:49,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:49,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:49,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:49,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:49,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:49,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:49,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:49,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:49,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:49,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:49,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:49,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:49,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:49,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:49,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:49,323 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 21:16:49,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:49,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:49,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:49,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:49,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:49,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:49,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:49,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:49,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:49,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:49,359 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:49,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:49,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:49,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:49,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:49,361 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:49,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:49,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:49,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:49,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:49,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:49,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:49,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:49,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:49,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:49,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:49,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:49,804 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:49,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2021-02-21 21:16:49,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c517543ab/7b4eab90a9a540f19dfff24cebc8d81e/FLAGef37687dd [2021-02-21 21:16:50,472 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:50,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1iff.c [2021-02-21 21:16:50,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c517543ab/7b4eab90a9a540f19dfff24cebc8d81e/FLAGef37687dd [2021-02-21 21:16:50,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c517543ab/7b4eab90a9a540f19dfff24cebc8d81e [2021-02-21 21:16:50,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:50,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:50,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:50,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:50,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:50,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:50" (1/1) ... [2021-02-21 21:16:50,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1338870d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:50, skipping insertion in model container [2021-02-21 21:16:50,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:50" (1/1) ... [2021-02-21 21:16:50,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:50,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:51,036 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/s1iff.c[588,601] [2021-02-21 21:16:51,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:51,066 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:51,081 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/s1iff.c[588,601] [2021-02-21 21:16:51,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:51,110 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:51,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51 WrapperNode [2021-02-21 21:16:51,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:51,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:51,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:51,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:51,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (1/1) ... [2021-02-21 21:16:51,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (1/1) ... [2021-02-21 21:16:51,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (1/1) ... [2021-02-21 21:16:51,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (1/1) ... [2021-02-21 21:16:51,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (1/1) ... [2021-02-21 21:16:51,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (1/1) ... [2021-02-21 21:16:51,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (1/1) ... [2021-02-21 21:16:51,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:51,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:51,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:51,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:51,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (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 21:16:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:51,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:51,736 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:16:51,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:51 BoogieIcfgContainer [2021-02-21 21:16:51,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:51,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:51,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:51,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:51,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:50" (1/3) ... [2021-02-21 21:16:51,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfe679b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:51, skipping insertion in model container [2021-02-21 21:16:51,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:51" (2/3) ... [2021-02-21 21:16:51,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfe679b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:51, skipping insertion in model container [2021-02-21 21:16:51,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:51" (3/3) ... [2021-02-21 21:16:51,767 INFO L111 eAbstractionObserver]: Analyzing ICFG s1iff.c [2021-02-21 21:16:51,777 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:51,782 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:51,801 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:51,826 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:51,826 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:51,826 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:51,827 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:51,827 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:51,827 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:51,827 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:51,827 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-21 21:16:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:16:51,856 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:51,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:16:51,858 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:51,864 INFO L82 PathProgramCache]: Analyzing trace with hash 137751759, now seen corresponding path program 1 times [2021-02-21 21:16:51,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:51,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730100615] [2021-02-21 21:16:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:51,954 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:52,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:52,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:52,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:52,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:52,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:52,262 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 21:16:52,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730100615] [2021-02-21 21:16:52,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:52,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:52,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066439053] [2021-02-21 21:16:52,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:52,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:52,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:52,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:52,290 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-21 21:16:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:52,512 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-02-21 21:16:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:52,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-21 21:16:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:52,525 INFO L225 Difference]: With dead ends: 119 [2021-02-21 21:16:52,525 INFO L226 Difference]: Without dead ends: 58 [2021-02-21 21:16:52,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:52,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-21 21:16:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-21 21:16:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-21 21:16:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-02-21 21:16:52,613 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 36 [2021-02-21 21:16:52,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:52,614 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-02-21 21:16:52,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-02-21 21:16:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:16:52,616 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:52,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:16:52,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:52,617 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:52,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1632327928, now seen corresponding path program 1 times [2021-02-21 21:16:52,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:52,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815054939] [2021-02-21 21:16:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:52,623 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:52,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:52,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:52,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:52,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:52,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:52,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:52,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:52,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:52,865 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 21:16:52,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815054939] [2021-02-21 21:16:52,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:52,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:52,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987557410] [2021-02-21 21:16:52,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:52,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:52,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:52,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:52,869 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2021-02-21 21:16:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:53,219 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-02-21 21:16:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:53,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-21 21:16:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:53,226 INFO L225 Difference]: With dead ends: 104 [2021-02-21 21:16:53,226 INFO L226 Difference]: Without dead ends: 79 [2021-02-21 21:16:53,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:16:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-21 21:16:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2021-02-21 21:16:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-21 21:16:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-21 21:16:53,271 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 36 [2021-02-21 21:16:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:53,272 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-21 21:16:53,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-21 21:16:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 21:16:53,274 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:53,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:16:53,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:53,275 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:53,275 INFO L82 PathProgramCache]: Analyzing trace with hash -881259695, now seen corresponding path program 1 times [2021-02-21 21:16:53,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:53,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638125580] [2021-02-21 21:16:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:53,302 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:53,304 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:53,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:53,563 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-21 21:16:53,565 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-21 21:16:53,568 WARN L141 QuantifierPusher]: treesize reduction 8, result has 52.9 percent of original size [2021-02-21 21:16:53,570 WARN L147 QuantifierPusher]: treesize reduction 8, result has 52.9 percent of original size 9 [2021-02-21 21:16:53,582 WARN L141 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-02-21 21:16:53,584 WARN L147 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size 15 [2021-02-21 21:16:53,600 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-21 21:16:53,601 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-21 21:16:53,619 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-21 21:16:53,622 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-21 21:16:53,638 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-21 21:16:53,639 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-21 21:16:53,673 WARN L141 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size [2021-02-21 21:16:53,675 WARN L147 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size 37 [2021-02-21 21:16:53,704 WARN L141 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-02-21 21:16:53,706 WARN L147 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size 25 [2021-02-21 21:16:53,720 WARN L141 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-02-21 21:16:53,721 WARN L147 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size 25 [2021-02-21 21:16:53,746 WARN L141 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-02-21 21:16:53,747 WARN L147 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size 25 [2021-02-21 21:16:53,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:16:53,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:16:53,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:16:53,848 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-02-21 21:16:53,851 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size 24 [2021-02-21 21:16:53,876 WARN L141 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size [2021-02-21 21:16:53,877 WARN L147 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size 25 [2021-02-21 21:16:53,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:16:53,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:16:53,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:16:53,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:16:53,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:53,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:54,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:54,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:54,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:54,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:54,079 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 21:16:54,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638125580] [2021-02-21 21:16:54,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:54,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-21 21:16:54,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784802495] [2021-02-21 21:16:54,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-21 21:16:54,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:54,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-21 21:16:54,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-02-21 21:16:54,088 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 20 states. [2021-02-21 21:16:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:55,480 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2021-02-21 21:16:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-21 21:16:55,480 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2021-02-21 21:16:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:55,483 INFO L225 Difference]: With dead ends: 112 [2021-02-21 21:16:55,484 INFO L226 Difference]: Without dead ends: 106 [2021-02-21 21:16:55,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=340, Invalid=1220, Unknown=0, NotChecked=0, Total=1560 [2021-02-21 21:16:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-21 21:16:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2021-02-21 21:16:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-21 21:16:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-21 21:16:55,508 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 53 [2021-02-21 21:16:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:55,508 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-21 21:16:55,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-21 21:16:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-21 21:16:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 21:16:55,511 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:55,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:16:55,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:55,511 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:55,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1326966967, now seen corresponding path program 1 times [2021-02-21 21:16:55,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:55,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860054952] [2021-02-21 21:16:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:55,517 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:55,519 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:55,539 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-21 21:16:55,539 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:55,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:16:55,563 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-21 21:16:55,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:55 BoogieIcfgContainer [2021-02-21 21:16:55,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:55,565 INFO L168 Benchmark]: Toolchain (without parser) took 4713.89 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 126.8 MB in the beginning and 65.6 MB in the end (delta: 61.2 MB). Peak memory consumption was 93.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:55,566 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 125.5 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:55,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:55,567 INFO L168 Benchmark]: Boogie Preprocessor took 45.12 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:55,568 INFO L168 Benchmark]: RCFGBuilder took 584.11 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 127.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:55,569 INFO L168 Benchmark]: TraceAbstraction took 3819.39 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 126.4 MB in the beginning and 65.6 MB in the end (delta: 60.9 MB). Peak memory consumption was 94.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:55,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 125.5 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.12 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 584.11 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 127.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3819.39 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 126.4 MB in the beginning and 65.6 MB in the end (delta: 60.9 MB). Peak memory consumption was 94.0 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 sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i