/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:47,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:47,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:47,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:15:47,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:15:47,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:15:47,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:15:47,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:15:47,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:15:47,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:15:47,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:15:47,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:15:47,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:15:47,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:15:47,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:15:47,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:15:47,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:15:47,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:15:47,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:15:48,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:15:48,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:15:48,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:15:48,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:15:48,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:15:48,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 00:15:48,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 00:15:48,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 00:15:48,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 00:15:48,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 00:15:48,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 00:15:48,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 00:15:48,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 00:15:48,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 00:15:48,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 00:15:48,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 00:15:48,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 00:15:48,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 00:15:48,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 00:15:48,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:15:48,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:15:48,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:15:48,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:15:48,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:48,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:48,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:48,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:48,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:48,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:48,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:48,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:48,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:48,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:48,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:48,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:48,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:48,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:48,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:48,091 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:48,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:48,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:48,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:48,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:48,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:48,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:48,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:48,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:48,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:48,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:48,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:48,495 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:48,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c [2021-02-24 00:15:48,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfde11d4f/6e43bfa53bca4cc5849347594f31351a/FLAG66138962d [2021-02-24 00:15:49,250 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:49,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn4f.c [2021-02-24 00:15:49,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfde11d4f/6e43bfa53bca4cc5849347594f31351a/FLAG66138962d [2021-02-24 00:15:49,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfde11d4f/6e43bfa53bca4cc5849347594f31351a [2021-02-24 00:15:49,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:49,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:49,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:49,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:49,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:49,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:49,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba1f22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49, skipping insertion in model container [2021-02-24 00:15:49,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:49,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:49,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:49,883 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/ifeqn4f.c[590,603] [2021-02-24 00:15:49,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:49,928 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:49,944 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/ifeqn4f.c[590,603] [2021-02-24 00:15:49,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:49,994 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:49,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49 WrapperNode [2021-02-24 00:15:49,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:49,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:49,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:49,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:50,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:50,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:50,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:50,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:50,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:50,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:50,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (1/1) ... [2021-02-24 00:15:50,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:50,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:50,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:50,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:50,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:50,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:50,728 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 00:15:50,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:50 BoogieIcfgContainer [2021-02-24 00:15:50,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:50,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:50,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:50,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:50,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:49" (1/3) ... [2021-02-24 00:15:50,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2449fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:50, skipping insertion in model container [2021-02-24 00:15:50,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:49" (2/3) ... [2021-02-24 00:15:50,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2449fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:50, skipping insertion in model container [2021-02-24 00:15:50,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:50" (3/3) ... [2021-02-24 00:15:50,741 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2021-02-24 00:15:50,749 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:50,755 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:50,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:50,804 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:50,804 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:50,804 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:50,804 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:50,805 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:50,805 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:50,805 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:50,805 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:50,822 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-24 00:15:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:15:50,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:50,833 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] [2021-02-24 00:15:50,834 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:50,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1172258344, now seen corresponding path program 1 times [2021-02-24 00:15:50,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:50,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698227469] [2021-02-24 00:15:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:51,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:51,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:51,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:51,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:51,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:51,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:51,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:51,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:51,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698227469] [2021-02-24 00:15:51,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:51,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:51,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587029175] [2021-02-24 00:15:51,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:51,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:51,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:51,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:51,201 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-24 00:15:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:51,554 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2021-02-24 00:15:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:51,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 00:15:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:51,565 INFO L225 Difference]: With dead ends: 119 [2021-02-24 00:15:51,566 INFO L226 Difference]: Without dead ends: 63 [2021-02-24 00:15:51,572 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 [2021-02-24 00:15:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-24 00:15:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-02-24 00:15:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-24 00:15:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-02-24 00:15:51,630 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 38 [2021-02-24 00:15:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:51,631 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-02-24 00:15:51,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-02-24 00:15:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:15:51,633 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:51,633 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] [2021-02-24 00:15:51,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:51,634 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2126496055, now seen corresponding path program 1 times [2021-02-24 00:15:51,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:51,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828204613] [2021-02-24 00:15:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:51,665 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:15:51,665 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:15:51,665 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:51,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:51,687 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:15:51,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:51 BoogieIcfgContainer [2021-02-24 00:15:51,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:51,690 INFO L168 Benchmark]: Toolchain (without parser) took 2093.41 ms. Allocated memory is still 151.0 MB. Free memory was 134.3 MB in the beginning and 118.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:51,691 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:51,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.52 ms. Allocated memory is still 151.0 MB. Free memory was 133.1 MB in the beginning and 123.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:51,693 INFO L168 Benchmark]: Boogie Preprocessor took 42.69 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 121.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:51,694 INFO L168 Benchmark]: RCFGBuilder took 690.71 ms. Allocated memory is still 151.0 MB. Free memory was 121.4 MB in the beginning and 115.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:51,695 INFO L168 Benchmark]: TraceAbstraction took 955.68 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 118.4 MB in the end (delta: -2.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:51,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 379.52 ms. Allocated memory is still 151.0 MB. Free memory was 133.1 MB in the beginning and 123.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.69 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 121.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 690.71 ms. Allocated memory is still 151.0 MB. Free memory was 121.4 MB in the beginning and 115.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 955.68 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 118.4 MB in the end (delta: -2.8 MB). There was no memory consumed. 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] i=0 [L31] COND FALSE !(i