/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/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:16,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:16,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:16,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:47:16,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:47:16,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:47:16,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:47:16,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:47:16,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:47:16,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:47:16,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:47:16,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:47:16,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:16,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:16,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:16,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:16,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:16,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:16,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:16,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:16,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:16,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:16,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:16,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:16,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:16,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:16,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:16,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:16,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:47:16,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:16,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:16,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:16,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:16,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:16,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:16,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:16,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:16,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:16,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:16,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:16,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:16,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:16,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:16,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:16,953 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:16,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:16,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:16,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:16,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:16,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:16,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:16,955 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:17,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:17,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:17,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:17,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:17,496 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:17,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2021-02-23 18:47:17,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2ac025e/3c6a6912c1354256aa546db1adb842d3/FLAGfd456cb47 [2021-02-23 18:47:18,214 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:18,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2of.c [2021-02-23 18:47:18,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2ac025e/3c6a6912c1354256aa546db1adb842d3/FLAGfd456cb47 [2021-02-23 18:47:18,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2ac025e/3c6a6912c1354256aa546db1adb842d3 [2021-02-23 18:47:18,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:18,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:18,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:18,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:18,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:18,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2791b517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18, skipping insertion in model container [2021-02-23 18:47:18,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:18,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:18,889 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/res2of.c[589,602] [2021-02-23 18:47:18,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:18,953 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:18,968 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/res2of.c[589,602] [2021-02-23 18:47:19,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:19,033 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:19,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19 WrapperNode [2021-02-23 18:47:19,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:19,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:19,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:19,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:19,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (1/1) ... [2021-02-23 18:47:19,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (1/1) ... [2021-02-23 18:47:19,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (1/1) ... [2021-02-23 18:47:19,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (1/1) ... [2021-02-23 18:47:19,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (1/1) ... [2021-02-23 18:47:19,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (1/1) ... [2021-02-23 18:47:19,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (1/1) ... [2021-02-23 18:47:19,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:19,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:19,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:19,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:19,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:19,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:19,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:19,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:19,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:19,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:19,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:19,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:19,749 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 18:47:19,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:19 BoogieIcfgContainer [2021-02-23 18:47:19,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:19,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:19,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:19,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:19,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:18" (1/3) ... [2021-02-23 18:47:19,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ded30a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:19, skipping insertion in model container [2021-02-23 18:47:19,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:19" (2/3) ... [2021-02-23 18:47:19,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ded30a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:19, skipping insertion in model container [2021-02-23 18:47:19,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:19" (3/3) ... [2021-02-23 18:47:19,760 INFO L111 eAbstractionObserver]: Analyzing ICFG res2of.c [2021-02-23 18:47:19,767 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:19,773 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:19,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:19,814 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:19,814 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:19,815 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:19,815 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:19,815 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:19,815 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:19,815 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:19,815 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2021-02-23 18:47:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 18:47:19,846 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:19,847 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] [2021-02-23 18:47:19,847 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:19,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:19,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1942755798, now seen corresponding path program 1 times [2021-02-23 18:47:19,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:19,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282401345] [2021-02-23 18:47:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:19,952 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:20,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282401345] [2021-02-23 18:47:20,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:20,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:20,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062751897] [2021-02-23 18:47:20,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:20,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:20,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:20,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:20,362 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2021-02-23 18:47:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:20,614 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2021-02-23 18:47:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:20,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2021-02-23 18:47:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:20,626 INFO L225 Difference]: With dead ends: 173 [2021-02-23 18:47:20,627 INFO L226 Difference]: Without dead ends: 85 [2021-02-23 18:47:20,632 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 [2021-02-23 18:47:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-23 18:47:20,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-02-23 18:47:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-23 18:47:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2021-02-23 18:47:20,692 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 48 [2021-02-23 18:47:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:20,693 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2021-02-23 18:47:20,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2021-02-23 18:47:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 18:47:20,695 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:20,696 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] [2021-02-23 18:47:20,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:20,696 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash -569778108, now seen corresponding path program 1 times [2021-02-23 18:47:20,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:20,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679465749] [2021-02-23 18:47:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:20,702 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:20,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:20,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:20,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679465749] [2021-02-23 18:47:20,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:20,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:20,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879467334] [2021-02-23 18:47:20,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:20,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:20,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:20,912 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 5 states. [2021-02-23 18:47:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:21,233 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2021-02-23 18:47:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:21,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2021-02-23 18:47:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:21,236 INFO L225 Difference]: With dead ends: 169 [2021-02-23 18:47:21,237 INFO L226 Difference]: Without dead ends: 121 [2021-02-23 18:47:21,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:47:21,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-23 18:47:21,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 91. [2021-02-23 18:47:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-23 18:47:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2021-02-23 18:47:21,258 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 48 [2021-02-23 18:47:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:21,258 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2021-02-23 18:47:21,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2021-02-23 18:47:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-23 18:47:21,262 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:21,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:21,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:21,263 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1289191085, now seen corresponding path program 1 times [2021-02-23 18:47:21,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:21,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718084622] [2021-02-23 18:47:21,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:21,292 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:21,295 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:21,444 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:21,508 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:21,558 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:21,558 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:21,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:21,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:21 BoogieIcfgContainer [2021-02-23 18:47:21,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:21,585 INFO L168 Benchmark]: Toolchain (without parser) took 2967.01 ms. Allocated memory was 165.7 MB in the beginning and 201.3 MB in the end (delta: 35.7 MB). Free memory was 142.5 MB in the beginning and 117.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:21,586 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 165.7 MB. Free memory is still 138.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:21,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.46 ms. Allocated memory is still 165.7 MB. Free memory was 141.4 MB in the beginning and 131.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:21,591 INFO L168 Benchmark]: Boogie Preprocessor took 78.32 ms. Allocated memory is still 165.7 MB. Free memory was 131.1 MB in the beginning and 129.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:21,593 INFO L168 Benchmark]: RCFGBuilder took 636.90 ms. Allocated memory is still 165.7 MB. Free memory was 129.3 MB in the beginning and 138.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:21,597 INFO L168 Benchmark]: TraceAbstraction took 1827.17 ms. Allocated memory was 165.7 MB in the beginning and 201.3 MB in the end (delta: 35.7 MB). Free memory was 138.3 MB in the beginning and 117.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:21,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 165.7 MB. Free memory is still 138.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 400.46 ms. Allocated memory is still 165.7 MB. Free memory was 141.4 MB in the beginning and 131.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.32 ms. Allocated memory is still 165.7 MB. Free memory was 131.1 MB in the beginning and 129.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 636.90 ms. Allocated memory is still 165.7 MB. Free memory was 129.3 MB in the beginning and 138.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1827.17 ms. Allocated memory was 165.7 MB in the beginning and 201.3 MB in the end (delta: 35.7 MB). Free memory was 138.3 MB in the beginning and 117.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 56.1 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); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 0 [L34] i=0 [L34] COND TRUE i