/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/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:47,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:47,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:47,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:47,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:47,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:47,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:47,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:47,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:47,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:47,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:47,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:47,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:47,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:47,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:47,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:47,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:47,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:47,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:47,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:47,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:47,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:47,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:47,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:47,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:47,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:47,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:47,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:47,301 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 21:16:47,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:47,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:47,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:47,316 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:47,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:47,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:47,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:47,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:47,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:47,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:47,317 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:47,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:47,317 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:47,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:47,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:47,318 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:47,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:47,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:47,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:47,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:47,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:47,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:47,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:47,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:47,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:47,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:47,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:47,736 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:47,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2021-02-21 21:16:47,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1707a8acb/ca3038e825ad4df3985fb4c63d64bdcd/FLAG391a44071 [2021-02-21 21:16:48,389 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:48,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1of.c [2021-02-21 21:16:48,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1707a8acb/ca3038e825ad4df3985fb4c63d64bdcd/FLAG391a44071 [2021-02-21 21:16:48,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1707a8acb/ca3038e825ad4df3985fb4c63d64bdcd [2021-02-21 21:16:48,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:48,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:48,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:48,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:48,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:48,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:48" (1/1) ... [2021-02-21 21:16:48,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25576318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:48, skipping insertion in model container [2021-02-21 21:16:48,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:48" (1/1) ... [2021-02-21 21:16:48,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:48,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:49,085 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/res1of.c[589,602] [2021-02-21 21:16:49,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:49,130 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:49,146 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/res1of.c[589,602] [2021-02-21 21:16:49,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:49,190 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:49,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49 WrapperNode [2021-02-21 21:16:49,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:49,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:49,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:49,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:49,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (1/1) ... [2021-02-21 21:16:49,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (1/1) ... [2021-02-21 21:16:49,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (1/1) ... [2021-02-21 21:16:49,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (1/1) ... [2021-02-21 21:16:49,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (1/1) ... [2021-02-21 21:16:49,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (1/1) ... [2021-02-21 21:16:49,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (1/1) ... [2021-02-21 21:16:49,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:49,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:49,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:49,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:49,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (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 21:16:49,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:49,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:49,375 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:49,375 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:49,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:49,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:49,852 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:49,853 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 21:16:49,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:49 BoogieIcfgContainer [2021-02-21 21:16:49,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:49,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:49,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:49,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:49,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:48" (1/3) ... [2021-02-21 21:16:49,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7a5005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:49, skipping insertion in model container [2021-02-21 21:16:49,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:49" (2/3) ... [2021-02-21 21:16:49,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7a5005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:49, skipping insertion in model container [2021-02-21 21:16:49,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:49" (3/3) ... [2021-02-21 21:16:49,870 INFO L111 eAbstractionObserver]: Analyzing ICFG res1of.c [2021-02-21 21:16:49,877 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:49,883 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:49,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:49,943 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:49,943 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:49,944 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:49,944 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:49,944 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:49,944 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:49,944 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:49,944 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-02-21 21:16:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 21:16:49,988 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:49,989 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] [2021-02-21 21:16:49,990 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:50,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:50,001 INFO L82 PathProgramCache]: Analyzing trace with hash -631447669, now seen corresponding path program 1 times [2021-02-21 21:16:50,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:50,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919322880] [2021-02-21 21:16:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:50,105 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:50,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:50,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:50,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:50,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:50,421 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 21:16:50,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919322880] [2021-02-21 21:16:50,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:50,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:50,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147280792] [2021-02-21 21:16:50,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:50,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:50,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:50,451 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2021-02-21 21:16:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:50,702 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2021-02-21 21:16:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:50,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-21 21:16:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:50,715 INFO L225 Difference]: With dead ends: 137 [2021-02-21 21:16:50,715 INFO L226 Difference]: Without dead ends: 67 [2021-02-21 21:16:50,719 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 21:16:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-02-21 21:16:50,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-02-21 21:16:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-21 21:16:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-21 21:16:50,775 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 42 [2021-02-21 21:16:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:50,776 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-21 21:16:50,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-21 21:16:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 21:16:50,778 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:50,779 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] [2021-02-21 21:16:50,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:50,779 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash 490949537, now seen corresponding path program 1 times [2021-02-21 21:16:50,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:50,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020485674] [2021-02-21 21:16:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:50,784 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:50,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:50,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:50,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:50,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:50,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:50,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:50,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:50,992 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 21:16:50,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020485674] [2021-02-21 21:16:50,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:50,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:50,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446906062] [2021-02-21 21:16:50,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:50,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:50,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:50,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:50,995 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 5 states. [2021-02-21 21:16:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:51,210 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2021-02-21 21:16:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:51,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-21 21:16:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:51,213 INFO L225 Difference]: With dead ends: 123 [2021-02-21 21:16:51,213 INFO L226 Difference]: Without dead ends: 91 [2021-02-21 21:16:51,215 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 21:16:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-21 21:16:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2021-02-21 21:16:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-21 21:16:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-02-21 21:16:51,231 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 42 [2021-02-21 21:16:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:51,231 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-02-21 21:16:51,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-02-21 21:16:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-21 21:16:51,234 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:51,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:16:51,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:51,235 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash -565475877, now seen corresponding path program 1 times [2021-02-21 21:16:51,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:51,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989014230] [2021-02-21 21:16:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:51,261 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:51,263 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:51,321 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:51,365 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:51,424 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:16:51,424 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:51,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:51,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:51 BoogieIcfgContainer [2021-02-21 21:16:51,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:51,454 INFO L168 Benchmark]: Toolchain (without parser) took 2671.56 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 114.9 MB in the beginning and 92.0 MB in the end (delta: 22.9 MB). Peak memory consumption was 54.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:51,455 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 131.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:51,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.25 ms. Allocated memory is still 157.3 MB. Free memory was 113.8 MB in the beginning and 132.2 MB in the end (delta: -18.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:51,457 INFO L168 Benchmark]: Boogie Preprocessor took 43.38 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 130.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:51,459 INFO L168 Benchmark]: RCFGBuilder took 620.32 ms. Allocated memory is still 157.3 MB. Free memory was 130.5 MB in the beginning and 120.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:51,465 INFO L168 Benchmark]: TraceAbstraction took 1589.68 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 119.8 MB in the beginning and 92.0 MB in the end (delta: 27.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:51,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 131.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 392.25 ms. Allocated memory is still 157.3 MB. Free memory was 113.8 MB in the beginning and 132.2 MB in the end (delta: -18.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.38 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 130.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 620.32 ms. Allocated memory is still 157.3 MB. Free memory was 130.5 MB in the beginning and 120.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1589.68 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 119.8 MB in the beginning and 92.0 MB in the end (delta: 27.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 0 [L33] i=0 [L33] COND TRUE i