/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/s1liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:18,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:18,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:18,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:47:18,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:18,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:18,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:18,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:18,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:18,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:18,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:18,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:18,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:18,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:18,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:18,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:18,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:18,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:18,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:18,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:18,853 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 18:47:18,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:18,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:18,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:18,883 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:18,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:18,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:18,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:18,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:18,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:18,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:18,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:18,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:18,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:18,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:18,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:18,887 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:18,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:18,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:18,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:18,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:18,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:18,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:18,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:19,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:19,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:19,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:19,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:19,298 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:19,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1liff.c [2021-02-23 18:47:19,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb860fc38/159cb9276c9445cc85e169393b822190/FLAG4aed8919a [2021-02-23 18:47:19,939 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:19,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1liff.c [2021-02-23 18:47:19,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb860fc38/159cb9276c9445cc85e169393b822190/FLAG4aed8919a [2021-02-23 18:47:20,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb860fc38/159cb9276c9445cc85e169393b822190 [2021-02-23 18:47:20,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:20,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:20,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:20,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:20,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:20,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfc11a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20, skipping insertion in model container [2021-02-23 18:47:20,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:20,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:20,605 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/s1liff.c[589,602] [2021-02-23 18:47:20,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:20,653 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:20,672 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/s1liff.c[589,602] [2021-02-23 18:47:20,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:20,723 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:20,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20 WrapperNode [2021-02-23 18:47:20,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:20,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:20,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:20,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:20,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (1/1) ... [2021-02-23 18:47:20,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:20,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:20,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:20,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:20,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (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 18:47:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:20,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:20,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:21,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:21,527 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:47:21,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:21 BoogieIcfgContainer [2021-02-23 18:47:21,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:21,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:21,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:21,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:21,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:20" (1/3) ... [2021-02-23 18:47:21,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63929387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:21, skipping insertion in model container [2021-02-23 18:47:21,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:20" (2/3) ... [2021-02-23 18:47:21,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63929387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:21, skipping insertion in model container [2021-02-23 18:47:21,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:21" (3/3) ... [2021-02-23 18:47:21,538 INFO L111 eAbstractionObserver]: Analyzing ICFG s1liff.c [2021-02-23 18:47:21,546 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:21,552 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:21,574 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:21,598 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:21,599 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:21,599 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:21,599 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:21,599 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:21,599 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:21,600 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:21,600 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-23 18:47:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:47:21,631 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:21,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:21,632 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:21,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash -276473570, now seen corresponding path program 1 times [2021-02-23 18:47:21,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:21,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743077558] [2021-02-23 18:47:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:21,742 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:21,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:21,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:21,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:21,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:22,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:22,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:22,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:22,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:22,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:22,023 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 18:47:22,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743077558] [2021-02-23 18:47:22,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:22,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:22,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903968150] [2021-02-23 18:47:22,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:22,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:22,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:22,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:22,052 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2021-02-23 18:47:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:22,376 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2021-02-23 18:47:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:22,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-23 18:47:22,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:22,388 INFO L225 Difference]: With dead ends: 131 [2021-02-23 18:47:22,389 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 18:47:22,393 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 18:47:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 18:47:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-23 18:47:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 18:47:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-23 18:47:22,448 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-23 18:47:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:22,449 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-23 18:47:22,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-23 18:47:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:47:22,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:22,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:22,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:22,452 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:22,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1119969012, now seen corresponding path program 1 times [2021-02-23 18:47:22,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:22,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045094774] [2021-02-23 18:47:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:22,458 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:22,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:22,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:22,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:22,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:22,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:22,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:22,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:22,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:22,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:22,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:22,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:22,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:22,665 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 18:47:22,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045094774] [2021-02-23 18:47:22,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:22,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:22,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269988255] [2021-02-23 18:47:22,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:22,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:22,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:22,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:22,669 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2021-02-23 18:47:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:22,959 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-02-23 18:47:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:22,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-23 18:47:22,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:22,964 INFO L225 Difference]: With dead ends: 120 [2021-02-23 18:47:22,964 INFO L226 Difference]: Without dead ends: 89 [2021-02-23 18:47:22,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:47:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-23 18:47:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2021-02-23 18:47:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 18:47:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-23 18:47:23,004 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 38 [2021-02-23 18:47:23,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:23,008 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-23 18:47:23,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-23 18:47:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:47:23,012 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:23,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:23,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:23,013 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:23,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:23,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1778519661, now seen corresponding path program 1 times [2021-02-23 18:47:23,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:23,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107906853] [2021-02-23 18:47:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:23,047 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:23,053 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:23,146 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:23,185 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:23,226 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:23,227 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:23,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:23,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:23 BoogieIcfgContainer [2021-02-23 18:47:23,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:23,249 INFO L168 Benchmark]: Toolchain (without parser) took 2923.15 ms. Allocated memory was 158.3 MB in the beginning and 196.1 MB in the end (delta: 37.7 MB). Free memory was 134.5 MB in the beginning and 154.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:23,250 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 131.6 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:23,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.08 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 123.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:23,252 INFO L168 Benchmark]: Boogie Preprocessor took 80.72 ms. Allocated memory is still 158.3 MB. Free memory was 123.5 MB in the beginning and 121.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:23,253 INFO L168 Benchmark]: RCFGBuilder took 722.41 ms. Allocated memory is still 158.3 MB. Free memory was 121.7 MB in the beginning and 138.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:23,254 INFO L168 Benchmark]: TraceAbstraction took 1716.86 ms. Allocated memory was 158.3 MB in the beginning and 196.1 MB in the end (delta: 37.7 MB). Free memory was 138.3 MB in the beginning and 154.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:23,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 131.6 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 379.08 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 123.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.72 ms. Allocated memory is still 158.3 MB. Free memory was 123.5 MB in the beginning and 121.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 722.41 ms. Allocated memory is still 158.3 MB. Free memory was 121.7 MB in the beginning and 138.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1716.86 ms. Allocated memory was 158.3 MB in the beginning and 196.1 MB in the end (delta: 37.7 MB). Free memory was 138.3 MB in the beginning and 154.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 22.1 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); [L31] sum[0] = N [L32] i=0 [L32] COND TRUE i