/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/eqn5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:51,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:51,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:51,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:51,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:51,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:51,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:51,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:51,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:51,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:51,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:51,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:51,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:51,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:51,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:51,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:51,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:51,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:51,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:51,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:51,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:51,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:51,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:51,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:51,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:46:51,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:51,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:51,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:51,635 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 18:46:51,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:51,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:51,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:51,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:51,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:51,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:51,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:51,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:51,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:51,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:51,667 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:51,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:51,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:51,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:51,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:51,668 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:51,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:51,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:51,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:51,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:51,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:51,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:51,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:52,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:52,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:52,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:52,134 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:52,139 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:52,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn5f.c [2021-02-23 18:46:52,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b795b3bd4/c9cbcf5d86ba4582889b242654d2c6b9/FLAG35f5db65f [2021-02-23 18:46:52,835 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:52,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn5f.c [2021-02-23 18:46:52,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b795b3bd4/c9cbcf5d86ba4582889b242654d2c6b9/FLAG35f5db65f [2021-02-23 18:46:52,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b795b3bd4/c9cbcf5d86ba4582889b242654d2c6b9 [2021-02-23 18:46:52,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:52,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:52,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:52,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:52,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:52,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:52" (1/1) ... [2021-02-23 18:46:52,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59da328a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:52, skipping insertion in model container [2021-02-23 18:46:52,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:52" (1/1) ... [2021-02-23 18:46:52,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:52,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:53,091 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/eqn5f.c[588,601] [2021-02-23 18:46:53,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:53,121 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:53,138 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/eqn5f.c[588,601] [2021-02-23 18:46:53,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:53,173 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:53,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53 WrapperNode [2021-02-23 18:46:53,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:53,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:53,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:53,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:53,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (1/1) ... [2021-02-23 18:46:53,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (1/1) ... [2021-02-23 18:46:53,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (1/1) ... [2021-02-23 18:46:53,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (1/1) ... [2021-02-23 18:46:53,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (1/1) ... [2021-02-23 18:46:53,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (1/1) ... [2021-02-23 18:46:53,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (1/1) ... [2021-02-23 18:46:53,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:53,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:53,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:53,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:53,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (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 18:46:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:46:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:46:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:46:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:46:53,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:53,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:53,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:53,887 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:46:53,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:53 BoogieIcfgContainer [2021-02-23 18:46:53,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:53,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:53,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:53,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:53,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:52" (1/3) ... [2021-02-23 18:46:53,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4faf239b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:53, skipping insertion in model container [2021-02-23 18:46:53,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:53" (2/3) ... [2021-02-23 18:46:53,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4faf239b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:53, skipping insertion in model container [2021-02-23 18:46:53,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:53" (3/3) ... [2021-02-23 18:46:53,899 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn5f.c [2021-02-23 18:46:53,906 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:53,910 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:53,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:53,954 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:53,954 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:53,954 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:53,954 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:53,955 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:53,955 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:53,955 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:53,955 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2021-02-23 18:46:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:46:53,985 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:53,986 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] [2021-02-23 18:46:53,986 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1792706489, now seen corresponding path program 1 times [2021-02-23 18:46:54,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:54,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397561844] [2021-02-23 18:46:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:54,084 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:54,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:54,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:54,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:54,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:54,367 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 18:46:54,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397561844] [2021-02-23 18:46:54,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:54,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:54,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917196237] [2021-02-23 18:46:54,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:54,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:54,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:54,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:54,398 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2021-02-23 18:46:54,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:54,597 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2021-02-23 18:46:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:54,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-02-23 18:46:54,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:54,608 INFO L225 Difference]: With dead ends: 115 [2021-02-23 18:46:54,608 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 18:46:54,612 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 18:46:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 18:46:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 18:46:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 18:46:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-02-23 18:46:54,674 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 40 [2021-02-23 18:46:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:54,675 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-02-23 18:46:54,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-02-23 18:46:54,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:46:54,678 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:54,679 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] [2021-02-23 18:46:54,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:54,679 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:54,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1320562932, now seen corresponding path program 1 times [2021-02-23 18:46:54,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:54,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190621226] [2021-02-23 18:46:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:54,694 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:54,762 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-23 18:46:54,762 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:46:54,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:54,793 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-23 18:46:54,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:54 BoogieIcfgContainer [2021-02-23 18:46:54,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:54,798 INFO L168 Benchmark]: Toolchain (without parser) took 1927.89 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 81.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:54,801 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:54,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:54,806 INFO L168 Benchmark]: Boogie Preprocessor took 44.35 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:54,808 INFO L168 Benchmark]: RCFGBuilder took 669.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 128.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:54,809 INFO L168 Benchmark]: TraceAbstraction took 903.41 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 81.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:54,822 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 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.35 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 669.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 128.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 903.41 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 81.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 1 [L32] b[0] = 1 [L33] i=1 [L33] COND FALSE !(i