/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/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:23:42,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:23:42,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:23:42,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:23:43,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:23:43,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:23:43,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:23:43,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:23:43,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:23:43,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:23:43,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:23:43,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:23:43,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:23:43,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:23:43,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:23:43,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:23:43,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:23:43,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:23:43,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:23:43,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:23:43,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:23:43,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:23:43,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:23:43,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:23:43,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:23:43,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:23:43,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:23:43,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:23:43,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:23:43,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:23:43,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:23:43,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:23:43,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:23:43,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:23:43,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:23:43,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:23:43,113 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:23:43,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:23:43,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:23:43,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:23:43,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:23:43,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:23:43,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:23:43,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:23:43,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:23:43,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:23:43,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:23:43,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:23:43,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:23:43,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-10-24 02:23:43,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfe9cb6e/6eafb5efa6ac43b78b20d3bc27753386/FLAG73dadb1cb [2020-10-24 02:23:44,212 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:23:44,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ncompf.c [2020-10-24 02:23:44,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfe9cb6e/6eafb5efa6ac43b78b20d3bc27753386/FLAG73dadb1cb [2020-10-24 02:23:44,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfe9cb6e/6eafb5efa6ac43b78b20d3bc27753386 [2020-10-24 02:23:44,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:23:44,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:23:44,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:44,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:23:44,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:23:44,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:44,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e62043d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44, skipping insertion in model container [2020-10-24 02:23:44,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:44,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:23:44,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:23:44,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:44,840 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:23:44,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:44,929 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:23:44,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44 WrapperNode [2020-10-24 02:23:44,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:44,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:23:44,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:23:44,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:23:44,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:44,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:44,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:44,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:45,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:45,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:45,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (1/1) ... [2020-10-24 02:23:45,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:23:45,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:23:45,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:23:45,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:23:45,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (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 [2020-10-24 02:23:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:23:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:23:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:23:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:23:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:23:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:23:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:23:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:23:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:23:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:23:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:23:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:23:45,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:23:45,149 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 02:23:45,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:23:45,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 02:23:45,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:23:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:23:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:23:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:23:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:23:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:23:45,832 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:23:45,833 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-24 02:23:45,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:45 BoogieIcfgContainer [2020-10-24 02:23:45,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:23:45,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:23:45,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:23:45,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:23:45,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:23:44" (1/3) ... [2020-10-24 02:23:45,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe7c190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:45, skipping insertion in model container [2020-10-24 02:23:45,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:44" (2/3) ... [2020-10-24 02:23:45,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe7c190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:45, skipping insertion in model container [2020-10-24 02:23:45,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:45" (3/3) ... [2020-10-24 02:23:45,845 INFO L111 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-10-24 02:23:45,857 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:23:45,863 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:23:45,877 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:23:45,901 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:23:45,901 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:23:45,901 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:23:45,901 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:23:45,902 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:23:45,902 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:23:45,902 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:23:45,902 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:23:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-10-24 02:23:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-24 02:23:45,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:45,930 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] [2020-10-24 02:23:45,931 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1716113714, now seen corresponding path program 1 times [2020-10-24 02:23:45,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:45,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685202574] [2020-10-24 02:23:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:46,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:46,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:23:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:23:46,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685202574] [2020-10-24 02:23:46,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:46,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:23:46,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031794602] [2020-10-24 02:23:46,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:23:46,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:46,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:23:46,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:23:46,283 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-10-24 02:23:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:46,639 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2020-10-24 02:23:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:23:46,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-10-24 02:23:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:46,663 INFO L225 Difference]: With dead ends: 145 [2020-10-24 02:23:46,663 INFO L226 Difference]: Without dead ends: 75 [2020-10-24 02:23:46,669 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 [2020-10-24 02:23:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-24 02:23:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-24 02:23:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-24 02:23:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-10-24 02:23:46,777 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 46 [2020-10-24 02:23:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:46,778 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-10-24 02:23:46,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:23:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-10-24 02:23:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-24 02:23:46,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:46,785 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] [2020-10-24 02:23:46,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:23:46,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:46,787 INFO L82 PathProgramCache]: Analyzing trace with hash 261214925, now seen corresponding path program 1 times [2020-10-24 02:23:46,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:46,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179263310] [2020-10-24 02:23:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:46,862 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-24 02:23:46,863 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-24 02:23:46,865 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 02:23:46,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:23:46,896 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-24 02:23:46,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:23:46 BoogieIcfgContainer [2020-10-24 02:23:46,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:23:46,902 INFO L168 Benchmark]: Toolchain (without parser) took 2329.45 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 76.0 MB in the end (delta: 51.4 MB). Peak memory consumption was 52.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:46,904 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:23:46,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.77 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:46,910 INFO L168 Benchmark]: Boogie Preprocessor took 100.03 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:46,911 INFO L168 Benchmark]: RCFGBuilder took 802.74 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 126.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:46,912 INFO L168 Benchmark]: TraceAbstraction took 1060.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 76.0 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:46,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.77 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.03 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 802.74 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 126.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1060.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 76.0 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 [L35] COND FALSE !(i